| Rank | Average Family Size ▼ | School District / Population |
| 1. | 4.51 | Ford Heights School District 169 / 2,858 |
| 2. | 4.40 | Cicero School District 99 / 83,332 |
| 3. | 4.24 | General George Patton School District 133 / 2,352 |
| 4. | 4.17 | Central Stickney School District 110 / 2,926 |
| 5. | 4.06 | Harvey School District 152 / 16,264 |
| 6. | 4.05 | J. Sterling Morton High School District 201 / 157,034 |
| 7. | 4.00 | Aurora East Unit School District 131 / 77,437 |
| 8. | 4.00 | West Harvey-Dixmoor Public School District 147 / 11,533 |
| 9. | 4.00 | Rhodes School District 84-5 / 4,867 |
| 10. | 3.97 | Bellwood School District 88 / 23,181 |
| 11. | 3.93 | Community Consolidated School District 168 / 10,243 |
| 12. | 3.90 | Reavis Township High School District 220 / 32,530 |
| 13. | 3.87 | Round Lake Community Unit School District 116 / 35,961 |
| 14. | 3.87 | Chicago Heights School District 170 / 24,842 |
| 15. | 3.87 | Burbank School District 111 / 29,604 |
| 16. | 3.86 | Maywood-Melrose Park-Broadview School District 89 / 44,278 |
| 17. | 3.85 | Arthur Community Unit School District 305 / 6,064 |
| 18. | 3.84 | Berwyn North School District 98 / 23,819 |
| 19. | 3.83 | Posen-Robbins Elementary School District 143-5 / 11,656 |
| 20. | 3.83 | Summit School District 104 / 12,164 |
| 21. | 3.82 | Mannheim School District 83 / 21,696 |
| 22. | 3.80 | North Chicago School District 187 / 31,655 |
| 23. | 3.80 | Waukegan Community Unit School District 60 / 84,428 |
| 24. | 3.78 | Berwyn South School District 100 / 31,765 |
| 25. | 3.76 | Berkeley School District 87 / 21,730 |
| 26. | 3.75 | South Holland School District 151 / 13,733 |
| 27. | 3.75 | Lincoln Elementary School District 156 / 7,139 |
| 28. | 3.74 | Franklin Park School District 84 / 10,955 |
| 29. | 3.73 | Plainfield School District 202 / 112,788 |
| 30. | 3.72 | Diamond Lake School District 76 / 8,598 |
| 31. | 3.72 | Zion Elementary School District 6 / 17,360 |
| 32. | 3.72 | Nelson Public School District 8 / 391 |
| 33. | 3.71 | West Chicago School District 33 / 30,575 |
| 34. | 3.70 | Skokie School District 73-5 / 10,048 |
| 35. | 3.70 | Valley View Community Unit School District 365U / 91,548 |
| 36. | 3.66 | Leyden Community High School District 212 / 63,851 |
| 37. | 3.64 | Dolton School District 148 / 23,169 |
| 38. | 3.63 | Joliet Public School District 86 / 86,698 |
| 39. | 3.63 | Proviso Township High School District 209 / 126,153 |
| 40. | 3.62 | Thornton Township High School District 205 / 116,702 |
| 41. | 3.61 | Bloom Township High School District 206 / 64,197 |
| 42. | 3.61 | Liberty Community Unit School District 2 / 3,463 |
| 43. | 3.61 | Creston Community Consolidated School District 161 / 1,120 |
| 44. | 3.60 | Cook County School District 130 / 29,252 |
| 45. | 3.60 | Brownstown Community Unit School District 201 / 2,435 |
| 46. | 3.59 | Prairie-Hills Elementary School District 144 / 22,015 |
| 47. | 3.59 | Midlothian School District 143 / 14,884 |
| 48. | 3.58 | Hazel Crest School District 152-5 / 8,161 |
| 49. | 3.57 | Mundelein Elementary School District 75 / 15,441 |
| 50. | 3.57 | Queen Bee School District 16 / 17,414 |
| 51. | 3.57 | Chicago Public School District 299 / 2,703,477 |
| 52. | 3.56 | Calumet City School District 155 / 11,022 |
| 53. | 3.56 | Schiller Park School District 81 / 12,817 |
| 54. | 3.56 | School District U-46 / 227,274 |
| 55. | 3.55 | Kenilworth School District 38 / 2,970 |
| 56. | 3.55 | Summit Hill School District 161 / 22,534 |
| 57. | 3.54 | Community High School District 94 / 40,762 |
| 58. | 3.54 | North Boone Community Unit School District 200 / 8,299 |
| 59. | 3.54 | Addison School District 4 / 37,158 |
| 60. | 3.53 | Cary Community Consolidated School District 26 / 22,076 |
| 61. | 3.53 | Fox River Grove Consolidated School District 3 / 4,336 |
| 62. | 3.53 | Millburn Community Consolidated School District 24 / 8,993 |
| 63. | 3.52 | Joliet Township High School District 204 / 129,911 |
| 64. | 3.51 | East Prairie School District 73 / 4,227 |
| 65. | 3.51 | Calumet Public School District 132 / 11,474 |
| 66. | 3.51 | New Lenox School District 122 / 38,008 |
| 67. | 3.51 | Bremen Community High School District 228 / 93,470 |
| 68. | 3.50 | Sunnybrook School District 171 / 10,756 |
| 69. | 3.50 | Channahon School District 17 / 10,195 |
| 70. | 3.50 | Grayslake Consolidated Community School District 46 / 29,684 |
| 71. | 3.50 | Arcola Consolidated Unit School District 306 / 4,358 |
| 72. | 3.50 | Mascoutah Community Unit School District 19 / 16,984 |
| 73. | 3.49 | Cahokia Community Unit School District 187 / 19,834 |
| 74. | 3.49 | Taft School District 90 / 3,636 |
| 75. | 3.49 | Wood Dale School District 7 / 10,408 |
| 76. | 3.49 | Evergreen Park Elementary School District 124 / 19,815 |
| 76. | 3.49 | Evergreen Park Community High School District 231 / 19,815 |
| 78. | 3.49 | Argo Community High School District 217 / 39,269 |
| 79. | 3.49 | Belvidere Consolidated Unit School District 100 / 44,786 |
| 80. | 3.49 | Mundelein Consolidated High School District 120 / 41,133 |
| 81. | 3.48 | St. Elmo Community Unit School District 202 / 3,244 |
| 82. | 3.48 | Winnetka School District 36 / 11,688 |
| 83. | 3.48 | Indian Prairie Community Unit School District 204 / 125,546 |
| 84. | 3.47 | Community Consolidated School District 93 / 34,289 |
| 85. | 3.47 | Western Springs School District 101 / 9,959 |
| 86. | 3.47 | Will County School District 92 / 14,473 |
| 87. | 3.47 | Oswego Community Unit School District 308 / 68,241 |
| 88. | 3.46 | Lincoln Way Community High School District 210 / 103,065 |
| 89. | 3.46 | Hinsdale Community Consolidated School District 181 / 25,590 |
| 90. | 3.46 | Minooka Community High School District 111 / 35,370 |
| 91. | 3.46 | Grant Park Community Unit School District 6 / 3,382 |
| 92. | 3.45 | Zion-Benton Township High School District 126 / 44,495 |
| 93. | 3.45 | Lincolnwood School District 74 / 12,422 |
| 94. | 3.45 | Laraway Community Consolidated School District 70C / 3,393 |
| 95. | 3.44 | Cowden-Herrick Community Unit School District 3A / 2,424 |
| 96. | 3.44 | Forest Ridge School District 142 / 17,479 |
| 97. | 3.44 | Aurora West Unit School District 129 / 77,301 |
| 98. | 3.43 | East St. Louis School District 189 / 39,557 |
| 99. | 3.43 | Fenton Community High School District 100 / 29,893 |
| 100. | 3.43 | Allendale Community Consolidated School District 17 / 1,090 |
| 101. | 3.43 | Central Community Unit School District 301 / 17,009 |
| 102. | 3.43 | Troy Community Consolidated School District 30C / 36,322 |
| 103. | 3.43 | Homer Community Consolidated School District 33C / 29,362 |
| 104. | 3.43 | Kinnikinnick Community Consolidated School District 131 / 13,496 |
| 105. | 3.42 | Byron Community Unit School District 226 / 7,580 |
| 106. | 3.42 | South Beloit Community Unit School District 320 / 6,562 |
| 107. | 3.42 | Kaneland Community Unit School District 302 / 25,110 |
| 108. | 3.42 | Lee Center Community Unit School District 271 / 1,638 |
| 109. | 3.42 | Flossmoor School District 161 / 22,229 |
| 110. | 3.42 | Community High School District 155 / 95,975 |
| 111. | 3.42 | Thornton Fractional Township High School District 215 / 59,426 |
| 112. | 3.42 | Community Unit School District 300 / 107,834 |
| 113. | 3.41 | Marquardt School District 15 / 26,435 |
| 114. | 3.41 | Manhattan School District 114 / 9,151 |
| 115. | 3.41 | Mokena School District 159 / 17,461 |
| 116. | 3.41 | Kankakee School District 111 / 33,072 |
| 117. | 3.40 | Teutopolis Community Unit School District 50 / 5,420 |
| 118. | 3.40 | Skokie-Fairview School District 72 / 6,609 |
| 119. | 3.40 | Bensenville School District 2 / 19,485 |
| 120. | 3.40 | River Trails School District 26 / 15,926 |
| 121. | 3.40 | Hiawatha Community Unit School District 426 / 3,334 |
| 122. | 3.40 | Indian Springs School District 109 / 23,923 |
| 123. | 3.40 | Lyons School District 103 / 22,451 |
| 124. | 3.39 | Cairo Community Unit School District 1 / 3,096 |
| 125. | 3.39 | Woodland Community Consolidated School District 50 / 51,177 |
| 126. | 3.39 | Harvard Community Unit School District 50 / 13,421 |
| 127. | 3.39 | St. George Community Consolidated School District 258 / 3,237 |
| 128. | 3.39 | Crystal Lake Community Consolidated School District 47 / 61,959 |
| 129. | 3.39 | Minooka Community Consolidated School District 201 / 20,814 |
| 130. | 3.39 | Dolton School District 149 / 27,594 |
| 131. | 3.39 | Grayslake Community High School District 127 / 43,357 |
| 132. | 3.38 | Lake Zurich Community Unit School District 95 / 31,304 |
| 133. | 3.38 | Beach Park Community Consolidated School District 3 / 20,497 |
| 134. | 3.38 | Warren Township High School District 121 / 67,701 |
| 135. | 3.38 | Depue Community Unit School District 103 / 2,199 |
| 136. | 3.37 | Ridgeland School District 122 / 21,095 |
| 137. | 3.37 | Reed Custer Community Unit School District 255U / 9,316 |
| 138. | 3.37 | Roselle School District 12 / 7,331 |
| 139. | 3.37 | Chicago Ridge School District 127-5 / 13,039 |
| 140. | 3.37 | Keeneyville School District 20 / 13,914 |
| 141. | 3.37 | Oak Lawn Community High School District 229 / 38,679 |
| 142. | 3.36 | Steward Elementary School District 220 / 726 |
| 143. | 3.36 | Bond County Community Unit School District 2 / 14,399 |
| 144. | 3.36 | LaGrange School District 102 / 25,405 |
| 145. | 3.36 | North Palos School District 117 / 27,944 |
| 146. | 3.35 | Virginia Community Unit School District 64 / 2,389 |
| 147. | 3.35 | Elmhurst School District 205 / 46,303 |
| 148. | 3.35 | Wilmette School District 39 / 26,126 |
| 149. | 3.35 | Tamaroa School District 5 / 1,220 |
| 150. | 3.35 | LaGrange School District 105 / 12,064 |
| 151. | 3.35 | Golf Elementary School District 67 / 6,716 |
| 152. | 3.34 | Big Hollow School District 38 / 13,777 |
| 153. | 3.34 | Georgetown-Ridge Farm Consolidated Unit School District 4 / 6,831 |
| 154. | 3.34 | Lemont-Bromberek Combined School District 113A / 24,160 |
| 155. | 3.34 | Braceville School District 75 / 1,452 |
| 156. | 3.34 | Frankfort Community Consolidated School District 157C / 16,911 |
| 157. | 3.34 | Mendota Community Consolidated School District 289 / 10,443 |
| 158. | 3.34 | Niles Township Community High School District 219 / 94,155 |
| 159. | 3.34 | Lemont Township High School District 210 / 24,464 |
| 160. | 3.34 | Mendota Township High School District 280 / 10,471 |
| 161. | 3.34 | Bartelso School District 57 / 1,226 |
| 162. | 3.34 | Amboy Community Unit School District 272 / 5,387 |
| 163. | 3.34 | Community High School District 218 / 120,793 |
| 164. | 3.33 | Atwood Heights School District 125 / 7,014 |
| 165. | 3.33 | Des Plaines Community Consolidated School District 62 / 51,568 |
| 166. | 3.33 | Lyons Township High School District 204 / 68,205 |
| 167. | 3.33 | Grant Community High School District 124 / 35,277 |
| 168. | 3.33 | Joppa-Maple Grove Unit District 38 / 1,520 |
| 169. | 3.33 | Winnebago Community Unit School District 323 / 7,718 |
| 170. | 3.33 | DuPage High School District 88 / 81,353 |
| 171. | 3.33 | New Trier Township High School District 203 / 59,234 |
| 172. | 3.32 | Hoopeston Area Community Unit School District 11 / 7,280 |
| 173. | 3.32 | Glenbard Township High School District 87 / 164,804 |
| 174. | 3.32 | Eswood Community Consolidated District 269 / 960 |
| 175. | 3.32 | Hawthorn Community Consolidated School District 73 / 29,745 |
| 176. | 3.32 | Kirby School District 140 / 34,807 |
| 177. | 3.32 | Glen Ellyn School District 41 / 29,865 |
| 178. | 3.32 | Hoover-Schrum Memorial School District 157 / 7,962 |
| 179. | 3.32 | Seneca Community Consolidated School District 170 / 3,659 |
| 180. | 3.32 | Oak Lawn-Hometown School District 123 / 34,784 |
| 181. | 3.31 | Fairmont School District 89 / 3,432 |
| 182. | 3.31 | Arbor Park School District 145 / 12,424 |
| 183. | 3.31 | Elmwood Park Community Unit School District 401 / 24,710 |
| 184. | 3.31 | Lockport Township High School District 205 / 74,398 |
| 185. | 3.31 | Lake Villa Community Consolidated School District 41 / 22,475 |
| 186. | 3.31 | Barrington Community Unit School District 220 / 44,855 |
| 187. | 3.31 | Schaumburg Community Consolidated School District 54 / 132,253 |
| 188. | 3.31 | Name N/A / 4,750,332 |
| 189. | 3.31 | Egyptian Community Unit School District 5 / 3,902 |
| 190. | 3.31 | Prophetstown-Lyndon-Tampico Community Unit School District 3 / 5,905 |
| 191. | 3.31 | Kansas Community Unit School District 3 / 1,726 |
| 192. | 3.31 | River Forest School District 90 / 11,166 |
| 193. | 3.31 | Antioch Community Consolidated School District 34 / 22,199 |
| 194. | 3.30 | St. Charles Community Unit School District 303 / 66,890 |
| 195. | 3.30 | Neoga Community Unit School District 3 / 4,907 |
| 196. | 3.30 | Vandalia Community Unit School District 203 / 10,591 |
| 197. | 3.30 | Opdyke-Belle Rive Community Consolidated School District 5 / 1,914 |
| 198. | 3.30 | Oglesby Elementary School District 125 / 4,625 |
| 199. | 3.30 | Yorkville Community Unit School District 115 / 26,231 |
| 200. | 3.30 | Lisbon Community Consolidated School District 90 / 804 |
| 201. | 3.30 | Pembroke Consolidated Community School District 259 / 1,837 |
| 202. | 3.30 | Gurnee School District 56 / 17,153 |
| 203. | 3.30 | Ashton Community Unit School District 275 / 4,306 |
| 204. | 3.29 | Gavin School District 37 / 7,405 |
| 205. | 3.29 | Scott-Morgan Consolidated Unit School District 2 / 1,593 |
| 206. | 3.29 | O'Fallon Community Consolidated School District 90 / 26,811 |
| 207. | 3.29 | Naperville Community Unit District 203 / 94,500 |
| 208. | 3.29 | Libertyville School District 70 / 18,897 |
| 209. | 3.29 | Venice Community Unit School District 3 / 844 |
| 210. | 3.29 | Marengo-Union Elementary Consolidated District 165 / 10,480 |
| 211. | 3.29 | Sandridge School District 172 / 4,410 |
| 212. | 3.28 | Waltonville Community Unit School District 1 / 2,208 |
| 213. | 3.28 | Harrison School District 36 / 3,658 |
| 214. | 3.28 | Township High School District 211 / 232,811 |
| 215. | 3.28 | Flora Community Unit School District 35 / 8,589 |
| 216. | 3.28 | South Holland School District 150 / 10,074 |
| 217. | 3.28 | Oak Grove School District 68 / 7,475 |
| 218. | 3.28 | Huntley Consolidated School District 158 / 39,083 |
| 219. | 3.28 | Orangeville Community Unit School District 203 / 2,870 |
| 220. | 3.28 | Homewood-Flossmoor Community High School District 233 / 38,387 |
| 221. | 3.28 | Orland School District 135 / 53,527 |
| 222. | 3.28 | Glenview Community Consolidated School District 34 / 39,322 |
| 223. | 3.27 | Zeigler-Royalton Community Unit School District 188 / 4,101 |
| 224. | 3.27 | Libertyville Community High School District 128 / 50,156 |
| 225. | 3.27 | Maine Township High School District 207 / 143,019 |
| 226. | 3.27 | Tonica Community Consolidated School District 79 / 1,438 |
| 227. | 3.27 | Geneva Community Unit School District 304 / 28,498 |
| 228. | 3.27 | Batavia Unit School District 101 / 31,902 |
| 229. | 3.27 | Community Consolidated School District 59 / 65,516 |
| 230. | 3.27 | Elverado Community Unit School District 196 / 2,986 |
| 231. | 3.27 | Prairie Grove Community School District 46 / 7,604 |
| 232. | 3.27 | Morton Grove School District 70 / 8,702 |
| 233. | 3.27 | Burnham School District 154-5 / 1,539 |
| 234. | 3.27 | Altamont Community Unit School District 10 / 4,969 |
| 235. | 3.27 | Dunlap Community Unit School District 323 / 19,107 |
| 236. | 3.27 | Hononegah Community High School District 207 / 31,142 |
| 237. | 3.27 | Princeville Community Unit School District 326 / 4,530 |
| 238. | 3.27 | Dieterich Community Unit School District 30 / 1,959 |
| 239. | 3.26 | Deerfield School District 109 / 21,058 |
| 240. | 3.26 | Union School District 81 / 1,597 |
| 241. | 3.26 | Prairie du Rocher Community Consolidated School District 134 / 868 |
| 241. | 3.26 | Chester Non-High School District 122 / 868 |
| 243. | 3.26 | Country Club Hills School District 160 / 12,204 |
| 244. | 3.26 | Carbon Cliff-Barstow School District 36 / 1,915 |
| 245. | 3.26 | Malden Community Consolidated School District 84 / 859 |
| 246. | 3.26 | Palatine Community Consolidated School District 15 / 117,475 |
| 247. | 3.26 | Community Consolidated School District 146 / 25,948 |
| 248. | 3.26 | Seneca Township High School District 160 / 7,361 |
| 249. | 3.26 | Cumberland Community Unit School District 77 / 6,611 |
| 250. | 3.26 | Valmeyer Community Unit School District 3 / 2,938 |
| 251. | 3.25 | Skokie School District 68 / 19,918 |
| 252. | 3.25 | Mazon-Verona-Kinsman Elementary School District 2C / 2,782 |
| 253. | 3.25 | Buncombe Consolidated School District 43 / 523 |
| 254. | 3.25 | Elementary School District 159 / 18,755 |
| 255. | 3.25 | Rondout School District 72 / 1,645 |
| 256. | 3.25 | Marengo Community High School District 154 / 13,969 |
| 257. | 3.25 | Antioch Community High School District 117 / 43,455 |
| 258. | 3.25 | Kildeer Countryside Community Consolidated School District 96 / 23,238 |
| 259. | 3.25 | Itasca School District 10 / 8,983 |
| 260. | 3.25 | Westchester School District 92-5 / 15,733 |
| 261. | 3.25 | Danville Community Consolidated School District 118 / 40,476 |
| 262. | 3.25 | Lockport School District 91 / 6,655 |
| 263. | 3.25 | East Maine School District 63 / 45,409 |
| 264. | 3.25 | Dupo Community Unit School District 196 / 7,368 |
| 265. | 3.24 | Rockford School District 205 / 194,568 |
| 266. | 3.24 | Tremont Community Unit School District 702 / 4,830 |
| 267. | 3.24 | Earlville Community Unit School District 9 / 2,725 |
| 268. | 3.24 | St. Libory Consolidated School District 30 / 825 |
| 269. | 3.24 | McHenry Community High School District 156 / 45,205 |
| 270. | 3.24 | Newark Community High School District 18 / 3,320 |
| 271. | 3.24 | Lincolnshire-Prairieview School District 103 / 13,374 |
| 272. | 3.24 | Johnsburg Community Unit School District 12 / 13,084 |
| 273. | 3.24 | Kell Consolidated School District 2 / 1,185 |
| 274. | 3.24 | Consolidated High School District 230 / 152,081 |
| 275. | 3.24 | Meridian Community Unit School District 223 / 8,875 |
| 276. | 3.24 | Wood River-Hartford Elementary School District 15 / 6,306 |
| 277. | 3.24 | Park Ridge Consolidated Community School District 64 / 40,199 |
| 278. | 3.24 | Stewardson-Strasburg Community Unit District 5A / 2,792 |
| 279. | 3.24 | Brooklyn Community Unit School District 188 / 523 |
| 280. | 3.24 | O'Fallon Township High School District 203 / 37,866 |
| 281. | 3.24 | Beecher Community Unit School District 200U / 6,242 |
| 282. | 3.23 | Park Forest School District 163 / 15,864 |
| 283. | 3.23 | Central School District 51 / 6,993 |
| 284. | 3.23 | Manteno Community Unit School District 5 / 12,119 |
| 285. | 3.23 | Deer Creek-Mackinaw Community Unit School District 701 / 5,900 |
| 286. | 3.23 | Skokie School District 69 / 17,748 |
| 287. | 3.23 | Rich Township High School District 227 / 67,082 |
| 288. | 3.23 | McHenry Community Consolidated School District 15 / 42,090 |
| 289. | 3.23 | Matteson Elementary School District 162 / 24,435 |
| 290. | 3.23 | Tri-Valley Community Unit School District 3 / 4,514 |
| 291. | 3.23 | Pearl City Community Unit School District 200 / 3,020 |
| 292. | 3.23 | Ramsey Community Unit School District 204 / 2,813 |
| 293. | 3.23 | Norridge School District 80 / 12,811 |
| 294. | 3.22 | Rochelle Township High School District 212 / 17,552 |
| 295. | 3.22 | Community Unit School District 200 / 78,853 |
| 296. | 3.22 | Lansing School District 158 / 22,671 |
| 297. | 3.22 | Wolf Branch School District 113 / 7,782 |
| 298. | 3.22 | Hinsdale Township High School District 86 / 74,746 |
| 299. | 3.22 | Coal City Community Unit School District 1 / 11,258 |
| 300. | 3.22 | Community Consolidated School District 180 / 6,550 |
| 301. | 3.22 | Woodstock Community Unit School District 200 / 37,718 |
| 302. | 3.22 | Belle Valley School District 119 / 8,611 |
| 303. | 3.22 | Lake Park Community High School District 108 / 50,556 |
| 304. | 3.22 | Adlai E. Stevenson High School District 125 / 61,457 |
| 305. | 3.22 | Calhoun Community Unit School District 40 / 3,248 |
| 306. | 3.21 | Wauconda Community Unit School District 118 / 26,822 |
| 307. | 3.21 | Township High School District 214 / 250,143 |
| 308. | 3.21 | Oblong Community Unit School District 4 / 3,792 |
| 309. | 3.21 | Morris School District 54 / 12,237 |
| 310. | 3.21 | Bement Community Unit School District 5 / 2,780 |
| 311. | 3.21 | Genoa-Kingston Community Unit School District 424 / 9,100 |
| 312. | 3.21 | El Paso-Gridley Community Unit School District 11 / 6,677 |
| 313. | 3.21 | Villa Park School District 45 / 35,059 |
| 314. | 3.21 | Greenview Community Unit School District 200 / 1,687 |
| 315. | 3.21 | Frankfort Community Unit School District 168 / 12,002 |
| 316. | 3.21 | Alsip-Hazelgreen-Oaklawn School District 126 / 17,235 |
| 317. | 3.20 | Benjamin School District 25 / 6,237 |
| 318. | 3.20 | Iuka Community Consolidated School District 7 / 2,016 |
| 319. | 3.20 | Lindop School District 92 / 4,110 |
| 320. | 3.20 | Rossville-Alvin Community Unit School District 7 / 2,322 |
| 321. | 3.20 | Rochelle Community Consolidated District 231 / 13,686 |
| 322. | 3.20 | Wheeling Community Consolidated School District 21 / 65,346 |
| 323. | 3.20 | Albers School District 63 / 1,354 |
| 324. | 3.20 | DeKalb Community Unit School District 428 / 51,421 |
| 325. | 3.20 | Fremont School District 79 / 17,415 |
| 326. | 3.20 | Lombard School District 44 / 35,368 |
| 327. | 3.20 | Glencoe School District 35 / 8,430 |
| 328. | 3.20 | Union Ridge School District 86 / 5,557 |
| 329. | 3.20 | Fieldcrest Community Unit School District 6 / 7,397 |
| 330. | 3.19 | Dimmick Community Consolidated School District 175 / 1,162 |
| 331. | 3.19 | Shirland Community Consolidated School District 134 / 1,539 |
| 332. | 3.19 | Steger School District 194 / 13,309 |
| 333. | 3.19 | Ridgewood Community High School District 234 / 19,068 |
| 334. | 3.19 | Harlem Unit School District 122 / 44,885 |
| 335. | 3.19 | Pontiac-William Holliday School District 105 / 8,048 |
| 336. | 3.19 | Herscher Community Unit School District 2 / 10,616 |
| 337. | 3.19 | Wilmington Community Unit School District 209U / 9,820 |
| 338. | 3.19 | Momence Community Unit School District 1 / 7,289 |
| 339. | 3.19 | Herrin Community Unit School District 4 / 16,062 |
| 340. | 3.19 | Township High School District 113 / 58,968 |
| 341. | 3.19 | North Greene Unit School District 3 / 6,541 |
| 342. | 3.18 | Northbrook Elementary School District 27 / 11,349 |
| 343. | 3.18 | Downers Grove Grade School District 58 / 52,817 |
| 344. | 3.18 | Prairie Hill Community Consolidated School District 133 / 4,770 |
| 345. | 3.18 | Rochester Community Unit School District 3A / 10,150 |
| 346. | 3.18 | Peotone Community Unit School District 207U / 11,003 |
| 347. | 3.18 | Bradley-Bourbonnais Consolidated High School District 307 / 38,851 |
| 348. | 3.18 | Bartonville School District 66 / 2,112 |
| 349. | 3.18 | Arlington Heights School District 25 / 49,788 |
| 350. | 3.18 | Pleasantdale School District 107 / 8,200 |
| 351. | 3.18 | Grand Ridge Community Consolidated School District 95 / 2,455 |
| 352. | 3.18 | Morris Community High School District 101 / 18,658 |
| 353. | 3.18 | Grand Prairie Community Consolidated School District 6 / 936 |
| 354. | 3.18 | Norwood Elementary School District 63 / 4,523 |
| 355. | 3.18 | Jamaica Community Unit School District 12 / 2,361 |
| 356. | 3.18 | Lena-Winslow Community Unit School District 202 / 4,898 |
| 357. | 3.18 | Donovan Community Unit School District 3 / 2,563 |
| 358. | 3.17 | Hillside School District 93 / 5,047 |
| 359. | 3.17 | Oakwood Community Unit School District 76 / 6,182 |
| 360. | 3.17 | Potomac Community Unit School District 10 / 1,404 |
| 361. | 3.17 | Komarek School District 94 / 5,099 |
| 362. | 3.17 | Evanston Township High School District 202 / 81,872 |
| 362. | 3.17 | Evanston Community Consolidated School District 65 / 81,872 |
| 364. | 3.17 | Lake Forest School District 67 / 19,190 |
| 365. | 3.17 | A-C Central Community Unit School District 262 / 2,747 |
| 366. | 3.17 | Northfield Township High School District 225 / 84,738 |
| 367. | 3.17 | Miller Township Community Consolidated School District / 2,298 |
| 368. | 3.17 | Maroa-Forsyth Community Unit School District 2 / 6,762 |
| 369. | 3.17 | Central Community Unit School District 4 / 6,939 |
| 370. | 3.17 | Westmont Community Unit School District 201 / 12,639 |
| 371. | 3.17 | Odell Community Consolidated School District 435 / 1,462 |
| 372. | 3.17 | Catlin Community Unit School District 5 / 3,080 |
| 373. | 3.17 | Saratoga Community Consolidated School District 60C / 5,754 |
| 374. | 3.16 | McLean County Unit School District 5 / 91,069 |
| 375. | 3.16 | Northbrook School District 28 / 13,508 |
| 376. | 3.16 | LaGrange Highlands School District 106 / 8,855 |
| 377. | 3.16 | Brookwood School District 167 / 10,312 |
| 378. | 3.16 | Johnston City Community Unit School District 1 / 8,074 |
| 379. | 3.16 | Plano Community Unit School District 88 / 9,943 |
| 380. | 3.16 | Eureka Community Unit District 140 / 9,638 |
| 381. | 3.16 | Signal Hill School District 181 / 3,325 |
| 382. | 3.16 | Bourbonnais School District 53 / 23,247 |
| 383. | 3.16 | Winchester Community Unit School District 1 / 3,798 |
| 384. | 3.16 | Center Cass School District 66 / 10,870 |
| 385. | 3.16 | Saunemin Community Consolidated School District 438 / 1,002 |
| 386. | 3.16 | Bradley School District 61 / 12,367 |
| 387. | 3.16 | Germantown Hills School District 69 / 6,399 |
| 388. | 3.16 | Auburn Community Unit School District 10 / 6,921 |
| 389. | 3.15 | Riley Community Consolidated School District 18 / 3,489 |
| 390. | 3.15 | Sunset Ridge School District 29 / 4,041 |
| 391. | 3.15 | Wethersfield Community Unit School District 230 / 3,952 |
| 392. | 3.15 | Mount Prospect School District 57 / 19,645 |
| 393. | 3.15 | Robinson Community Unit School District 2 / 12,392 |
| 394. | 3.15 | North Shore School District 112 / 35,908 |
| 395. | 3.15 | Rock Island School District 41 / 45,098 |
| 396. | 3.15 | Darien School District 61 / 15,935 |
| 397. | 3.15 | Lake Forest Community High School District 115 / 27,343 |
| 398. | 3.15 | Edinburg Community Unit School District 4 / 2,011 |
| 399. | 3.15 | Somonauk Community Unit School District 432 / 4,889 |
| 400. | 3.15 | Shawnee Community Unit School District 84 / 3,248 |
| 401. | 3.14 | Community High School District 99 / 108,862 |
| 402. | 3.14 | Monmouth-Roseville Community Unit School District 238 / 11,091 |
| 403. | 3.14 | District 50 Schools / 7,812 |
| 404. | 3.14 | Lebanon Community Unit School District 9 / 5,411 |
| 405. | 3.14 | Newark Community Consolidated School District 66 / 2,235 |
| 406. | 3.14 | St. Rose School District 14-15 / 1,205 |
| 407. | 3.14 | Pennoyer School District 79 / 5,428 |
| 408. | 3.14 | North Pekin-Marquette Heights School District 102 / 5,168 |
| 409. | 3.14 | Mahomet-Seymour Community Unit School District 3 / 13,793 |
| 410. | 3.14 | Crete-Monee Community Unit School District 201-U / 33,941 |
| 411. | 3.14 | Westville Community Unit School District 2 / 6,741 |
| 412. | 3.14 | Brookfield School District 95 / 10,919 |
| 413. | 3.14 | Marseilles Elementary School District 150 / 4,591 |
| 414. | 3.14 | Sycamore Community Unit School District 427 / 21,820 |
| 415. | 3.14 | Homewood School District 153 / 15,669 |
| 416. | 3.14 | Avoca School District 37 / 5,979 |
| 417. | 3.14 | Beardstown Community Unit School District 15 / 7,865 |
| 418. | 3.13 | Bloomington School District 87 / 44,792 |
| 419. | 3.13 | Decatur School District 61 / 72,603 |
| 420. | 3.13 | Gardner-South Wilmington Township High School District / 3,793 |
| 421. | 3.13 | Belleville School District 118 / 37,204 |
| 422. | 3.13 | Freeburg Community Consolidated School District 70 / 7,390 |
| 423. | 3.13 | Rockton School District 140 / 11,337 |
| 424. | 3.13 | Riverside School District 96 / 13,570 |
| 425. | 3.13 | Elmwood Community Unit School District 322 / 3,921 |
| 426. | 3.13 | Washington Community High School District 308 / 22,678 |
| 427. | 3.13 | Dodds Community Consolidated School District 7 / 1,517 |
| 428. | 3.13 | Oakdale Community Consolidated School District 1 / 783 |
| 429. | 3.12 | Richmond-Burton Community High School District 157 / 11,412 |
| 429. | 3.12 | Nippersink School District 2 / 11,412 |
| 431. | 3.12 | Trico Community Unit School District 176 / 6,891 |
| 432. | 3.12 | Freeburg Community High School District 77 / 12,405 |
| 433. | 3.12 | Peoria School District 150 / 101,590 |
| 434. | 3.12 | Annawan Community Unit School District 226 / 2,260 |
| 435. | 3.12 | Oak Park and River Forest District 200 / 62,592 |
| 436. | 3.12 | Colona School District 190 / 4,169 |
| 437. | 3.12 | Forrestville Valley Community Unit School District 221 / 5,585 |
| 438. | 3.11 | Shiloh Village School District 85 / 4,786 |
| 439. | 3.11 | Lake Bluff Elementary School District 65 / 7,946 |
| 440. | 3.11 | Orion Community Unit School District 223 / 6,384 |
| 441. | 3.11 | La Harpe Community School District 347 / 2,318 |
| 442. | 3.11 | Prairie Central Community Unit School District 8 / 11,810 |
| 443. | 3.11 | Woodridge School District 68 / 32,135 |
| 444. | 3.11 | Girard Community Unit School District 3 / 4,184 |
| 445. | 3.11 | North Clay Community Unit School District 25 / 3,610 |
| 446. | 3.11 | Niles Elementary School District 71 / 7,765 |
| 447. | 3.11 | Unity Point Community Consolidated School District 140 / 5,451 |
| 448. | 3.11 | Roxana Community Unit School District 1 / 12,394 |
| 449. | 3.11 | Aviston School District 21 / 2,349 |
| 450. | 3.11 | Hutsonville Community Unit School District 1 / 2,189 |
| 451. | 3.11 | Meridian Community Unit School District 101 / 3,511 |
| 452. | 3.11 | Bluford Community Consolidated School District 114 / 2,894 |
| 453. | 3.10 | Thompsonville Community Unit School District 174 / 1,973 |
| 454. | 3.10 | Butler School District 53 / 4,338 |
| 455. | 3.10 | Webber Township High School District 204 / 3,025 |
| 456. | 3.10 | Selmaville Community Consolidated School District 10 / 2,079 |
| 457. | 3.10 | Riverside Brookfield Township School District 208 / 28,767 |
| 458. | 3.10 | Christopher Community Unit School District 99 / 4,658 |
| 459. | 3.10 | New Athens Community Unit School District 60 / 4,371 |
| 460. | 3.10 | Cissna Park Community Unit School District 6 / 1,869 |
| 461. | 3.10 | Ohio Community High School District 505 / 935 |
| 462. | 3.10 | Indian Creek Community Unit District 425 / 4,934 |
| 463. | 3.10 | Pleasant Plains Community Unit School District 8 / 7,778 |
| 464. | 3.10 | Sandwich Community Unit School District 430 / 14,462 |
| 465. | 3.10 | Jersey Community Unit School District 100 / 20,346 |
| 466. | 3.10 | Rockdale School District 84 / 2,132 |
| 467. | 3.10 | Silvis School District 34 / 5,347 |
| 468. | 3.09 | Bradford Community Unit School District 1 / 1,752 |
| 469. | 3.09 | Marissa Community Unit School District 40 / 3,246 |
| 470. | 3.09 | Hartsburg-Emden Community Unit School District 21 / 1,178 |
| 471. | 3.09 | Warsaw Community Unit School District 316 / 3,032 |
| 472. | 3.09 | Effingham Community Unit School District 40 / 20,506 |
| 473. | 3.09 | Southwestern Community Unit School District 9 / 9,397 |
| 474. | 3.09 | Griggsville-Perry Community Unit School District 4 / 2,266 |
| 475. | 3.09 | Streator Elementary School District 44 / 17,288 |
| 476. | 3.09 | Kewanee Community Unit School District 229 / 10,284 |
| 477. | 3.09 | Ohio Community Consolidated School District 17 / 936 |
| 478. | 3.09 | Streator Township High School District 40 / 18,882 |
| 479. | 3.09 | Ewing Northern Community Consolidated District 115 / 1,943 |
| 480. | 3.09 | Chaney-Monge School District 88 / 6,168 |
| 481. | 3.09 | Fox Lake Grade School District 114 / 8,933 |
| 482. | 3.09 | Thornton School District 154 / 2,883 |
| 483. | 3.09 | Millstadt Consolidated Community School District 160 / 9,209 |
| 484. | 3.09 | Hardin County Community Unit School District 1 / 4,402 |
| 485. | 3.09 | Worth School District 127 / 11,083 |
| 486. | 3.09 | Aptakisic-Tripp Community Consolidated School District / 18,334 |
| 487. | 3.08 | Oak Park Elementary School District 97 / 51,426 |
| 488. | 3.08 | Meridian Community Unit School District 15 / 6,318 |
| 489. | 3.08 | Windsor Community Unit School District 1 / 2,533 |
| 490. | 3.08 | Carterville Community Unit School District 5 / 10,959 |
| 491. | 3.08 | United Township High School District 30 / 40,413 |
| 492. | 3.08 | Edwardsville Community Unit School District 7 / 50,001 |
| 493. | 3.08 | Columbia Community Unit School District 4 / 12,218 |
| 494. | 3.08 | Smithton Community Consolidated School District 130 / 4,054 |
| 495. | 3.08 | River Grove School District 85-5 / 7,764 |
| 496. | 3.08 | New Hope Community Consolidated School District 6 / 1,689 |
| 497. | 3.08 | Rantoul City School District 137 / 12,268 |
| 498. | 3.08 | Carbondale Elementary School District 95 / 27,628 |
| 499. | 3.08 | Rosemont Elementary School District 78 / 2,112 |
| 500. | 3.08 | Edgar County Community Unit District 6 / 2,264 |
| 501. | 3.08 | Illini Bluffs Community Unit School District 327 / 5,538 |
| 502. | 3.07 | Bloomingdale School District 13 / 13,507 |
| 503. | 3.07 | St. Anne Community High School District 302 / 4,606 |
| 504. | 3.07 | Williamsville Community Unit School District 15 / 7,209 |
| 505. | 3.07 | Okaw Valley Community Unit School District 302 / 3,771 |
| 506. | 3.07 | Pecatonica Community Unit School District 321 / 5,293 |
| 507. | 3.07 | Northwestern Community Unit School District 2 / 2,622 |
| 508. | 3.07 | Carbondale Community High School District 165 / 37,283 |
| 509. | 3.07 | East Moline School District 37 / 26,788 |
| 510. | 3.07 | Robein School District 85 / 2,089 |
| 511. | 3.07 | Central Community High School District 71 / 15,724 |
| 512. | 3.07 | Belleville Township High School District 201 / 107,228 |
| 513. | 3.07 | Highland Community Unit School District 5 / 17,882 |
| 514. | 3.06 | Mount Vernon School District 80 / 14,075 |
| 515. | 3.06 | Salem Community High School District 600 / 15,146 |
| 516. | 3.06 | Western Community Unit School District 12 / 3,772 |
| 517. | 3.06 | Odin Community High School District 700 / 1,714 |
| 518. | 3.06 | Pinckneyville Community High School District 101 / 11,240 |
| 519. | 3.06 | Nokomis Community Unit School District 22 / 4,731 |
| 520. | 3.06 | Mulberry Grove Community Unit School District 1 / 2,221 |
| 521. | 3.06 | Winthrop Harbor School District 1 / 6,638 |
| 522. | 3.06 | East Alton-Wood River Community High School District 14 / 14,121 |
| 523. | 3.06 | Galatia Community Unit School District 1 / 2,306 |
| 524. | 3.06 | Le Roy Community Unit School District 2 / 4,413 |
| 525. | 3.06 | Polo Community Unit School District 222 / 4,213 |
| 526. | 3.06 | Odin School District 122 / 1,723 |
| 527. | 3.05 | Breese School District 12 / 6,993 |
| 528. | 3.05 | Oak Grove School District 68 / 3,962 |
| 529. | 3.05 | De Soto Consolidated School District 86 / 1,860 |
| 530. | 3.05 | Sterling Community Unit District 5 / 21,736 |
| 531. | 3.05 | LaSalle-Peru Township High School District 120 / 29,191 |
| 532. | 3.05 | Triad Community Unit School District 2 / 20,518 |
| 533. | 3.05 | Illinois Valley Central Unit School District 321 / 13,582 |
| 534. | 3.05 | South Fork School District 14 / 2,583 |
| 535. | 3.04 | Pinckneyville School District 50 / 5,823 |
| 536. | 3.04 | Ludlow Community Consolidated School District 142 / 1,109 |
| 537. | 3.04 | Pawnee Community Unit School District 11 / 3,144 |
| 538. | 3.04 | Gower School District 62 / 9,559 |
| 539. | 3.04 | Ball-Chatham Community Unit School District 5 / 26,074 |
| 540. | 3.04 | Champaign Community Unit School District 4 / 91,656 |
| 541. | 3.04 | Warrensburg-Latham Community Unit District 11 / 6,374 |
| 542. | 3.04 | South Central Community Unit School District 401 / 4,398 |
| 543. | 3.04 | LaSalle Elementary School District 122 / 9,271 |
| 544. | 3.04 | Bureau Valley Community Unit School District 340 / 6,834 |
| 545. | 3.04 | Centralia School District 135 / 13,771 |
| 546. | 3.04 | Field Community Consolidated School District 3 / 2,619 |
| 547. | 3.04 | Maercker School District 60 / 18,075 |
| 548. | 3.04 | Montmorency Community Consolidated School District 145 / 2,524 |
| 549. | 3.04 | Midwest Central Community Unit School District 191 / 6,860 |
| 550. | 3.04 | Alton Community Unit School District 11 / 49,040 |
| 551. | 3.04 | Salem School District 111 / 8,760 |
| 552. | 3.04 | Granite City Community Unit School District 9 / 44,580 |
| 553. | 3.04 | Ottawa Elementary School District 141 / 20,036 |
| 554. | 3.03 | Patoka Community Unit School District 100 / 1,610 |
| 555. | 3.03 | Marshall Community Unit School District 2C / 8,346 |
| 556. | 3.03 | Forest Park School District 91 / 14,282 |
| 557. | 3.03 | Du Quoin Community Unit School District 300 / 9,484 |
| 558. | 3.03 | Emmons School District 33 / 3,470 |
| 559. | 3.03 | Willow Springs School District 108 / 3,358 |
| 560. | 3.03 | Moline Unit School District 40 / 48,527 |
| 561. | 3.03 | Stark County Community Unit School District 100 / 4,935 |
| 562. | 3.03 | Clinton Community Unit School District 15 / 12,193 |
| 563. | 3.03 | Sangamon Valley Community Unit School District 9 / 4,022 |
| 564. | 3.03 | Gardner Community Consolidated School District 72C / 1,562 |
| 565. | 3.03 | East Richland Community Unit School District 1 / 14,022 |
| 566. | 3.03 | Rockridge Community Unit School District 300 / 7,181 |
| 567. | 3.03 | Mount Zion Community Unit School District 3 / 11,951 |
| 568. | 3.02 | Ottawa Township High School District 140 / 31,903 |
| 569. | 3.02 | Prospect Heights School District 23 / 18,120 |
| 570. | 3.02 | Midland Community Unit School District 7 / 5,409 |
| 571. | 3.02 | Glen Ellyn Community Consolidated School District 89 / 21,433 |
| 572. | 3.02 | Washington School District 52 / 7,873 |
| 573. | 3.02 | ROWVA Community Unit School District 208 / 4,053 |
| 574. | 3.02 | Metamora Township High School District 122 / 15,545 |
| 575. | 3.02 | Paris-Union School District 95 / 8,539 |
| 576. | 3.02 | Gibson City-Melvin-Sibley Community Unit School District 5 / 6,136 |
| 577. | 3.02 | Jasper Community Consolidated School District 17 / 1,555 |
| 578. | 3.02 | Pontiac Township High School District 90 / 16,352 |
| 579. | 3.02 | Medinah School District 11 / 6,821 |
| 580. | 3.02 | Cass School District 63 / 8,043 |
| 581. | 3.02 | Collinsville Community Unit School District 10 / 47,733 |
| 582. | 3.02 | Cobden School Unit District 17 / 3,705 |
| 583. | 3.02 | Lovington Community Unit School District 303 / 1,872 |
| 584. | 3.02 | Durand Community Unit School District 322 / 3,924 |
| 585. | 3.02 | Rantoul Township High School District 193 / 17,357 |
| 586. | 3.01 | Springfield School District 186 / 113,448 |
| 587. | 3.01 | Hamilton Community Consolidated School District 328 / 3,967 |
| 588. | 3.01 | La Moille Community Unit School District 303 / 2,027 |
| 589. | 3.01 | Monticello Community Unit School District 25 / 8,871 |
| 590. | 3.01 | Community Unit School District 16 / 5,490 |
| 591. | 3.01 | Villa Grove Community Unit School District 302 / 4,284 |
| 592. | 3.01 | Quincy School District 172 / 50,932 |
| 593. | 3.01 | Bannockburn School District 106 / 2,015 |
| 594. | 3.01 | Creve Coeur School District 76 / 5,909 |
| 595. | 3.01 | Northbrook/Glenview School District 30 / 10,790 |
| 596. | 3.01 | Edwards County Community Unit School District 1 / 5,705 |
| 597. | 3.01 | Cornell Community Consolidated School District 426 / 978 |
| 597. | 3.01 | Flanagan-Cornell District 74 in Cornell / 978 |
| 599. | 3.01 | Bethalto Consolidated Unit School District 8 / 16,147 |
| 600. | 3.01 | Whiteside School District 115 / 12,809 |
| 601. | 3.00 | Grant Community Consolidated School District 110 / 7,659 |
| 602. | 3.00 | Waterloo Community Unit School District 5 / 16,904 |
| 603. | 3.00 | Pontiac Community Consolidated School District 429 / 13,690 |
| 604. | 3.00 | Roanoke-Benson Community Unit School District 60 / 3,399 |
| 605. | 3.00 | Rock Falls Elementary School District 13 / 7,965 |
| 606. | 3.00 | Tolono Community Unit School District 7 / 9,744 |
| 607. | 3.00 | Winfield School District 34 / 3,950 |
| 608. | 3.00 | Erie Community Unit School District 1 / 3,891 |
| 608. | 3.00 | Brussels Community Unit School District 42 / 1,595 |
| 608. | 3.00 | Deer Park Community Consolidated School District 82 / 769 |
| 611. | 3.00 | Benton Consolidated High School District 103 / 12,686 |
| 612. | 3.00 | Massac Unit School District 1 / 13,835 |
| 613. | 3.00 | Freeport School District 145 / 30,696 |
| 614. | 3.00 | Riverdale School District 14 / 1,239 |
| 615. | 3.00 | Murphysboro Community Unit School District 186 / 15,300 |
| 616. | 3.00 | Brimfield Community Unit School District 309 / 3,732 |
| 617. | 3.00 | Ridgeview Community Unit School District 19 / 3,879 |
| 618. | 3.00 | Pana Community Unit School District 8 / 9,699 |
| 619. | 2.99 | Metamora Community Consolidated School District 1 / 6,271 |
| 620. | 2.99 | Rutland Community Consolidated School District 230 / 865 |
| 621. | 2.99 | Rock Falls Township High School District 301 / 14,610 |
| 622. | 2.99 | Lexington Community Unit School District 7 / 2,883 |
| 623. | 2.99 | Clay City Community Unit District 10 / 2,359 |
| 624. | 2.99 | Central A & M Community Unit School District 21 / 4,804 |
| 625. | 2.99 | Marion Community Unit School District 2 / 27,375 |
| 626. | 2.99 | Mount Vernon Township High School District 201 / 30,123 |
| 627. | 2.99 | Chester-East Lincoln Community Csd 61 / 3,298 |
| 628. | 2.99 | Morrison Community Unit School District 6 / 6,818 |
| 629. | 2.99 | Dixon Unit School District 170 / 22,961 |
| 630. | 2.99 | Wabash Community Unit School District 348 / 11,051 |
| 631. | 2.99 | Iroquois West Community Unit School District 10 / 5,709 |
| 632. | 2.99 | Central School District 104 / 4,923 |
| 633. | 2.98 | Central City School District 133 / 2,183 |
| 634. | 2.98 | Dakota Community Unit School District 201 / 4,419 |
| 635. | 2.98 | Beecher City Community Unit School District 20 / 2,516 |
| 636. | 2.98 | Alden-Hebron School District 19 / 2,888 |
| 637. | 2.98 | Waltham Community Consolidated School District 185 / 2,331 |
| 638. | 2.98 | Steeleville Community Unit School District 138 / 3,088 |
| 639. | 2.98 | Centralia High School District 200 / 21,690 |
| 640. | 2.98 | Delavan Community Unit School District 703 / 2,604 |
| 641. | 2.98 | Benton Community Consolidated School District 47 / 10,066 |
| 642. | 2.98 | Lisle Community Unit School District 202 / 13,379 |
| 643. | 2.98 | South Wilmington Consolidated School District 74 / 786 |
| 644. | 2.98 | Hampton School District 29 / 2,194 |
| 645. | 2.98 | Palos Community Consolidated School District 118 / 22,984 |
| 646. | 2.98 | Bismarck-Henning Consolidated Unit School District / 4,445 |
| 647. | 2.98 | Akin Community Consolidated School District 91 / 745 |
| 648. | 2.98 | Limestone Community High School District 310 / 22,180 |
| 649. | 2.98 | North Wayne Community Unit School District 200 / 3,092 |
| 650. | 2.97 | Bethel School District 82 / 990 |
| 651. | 2.97 | Camp Point Community Unit School District 3 / 4,857 |
| 652. | 2.97 | Dwight Common School District 232 / 6,243 |
| 653. | 2.97 | Pikeland Community Unit School District 10 / 8,435 |
| 654. | 2.97 | Carlyle Community Unit School District 1 / 10,418 |
| 655. | 2.97 | Heyworth Community Unit School District 4 / 4,917 |
| 656. | 2.97 | Dwight Township High School District 230 / 6,561 |
| 657. | 2.97 | Athens Community Unit School District 213 / 5,559 |
| 658. | 2.97 | Spring Valley Community Consolidated School District 99 / 6,029 |
| 659. | 2.97 | Kings Consolidated School District 144 / 1,060 |
| 660. | 2.96 | Schuyler-Industry Community Unit School District 5 / 7,986 |
| 661. | 2.96 | Flanagan-Cornell District 74 / 1,704 |
| 662. | 2.96 | Hinckley-Big Rock Community Unit School District 429 / 4,836 |
| 663. | 2.96 | Pleasant Valley School District 62 / 4,397 |
| 664. | 2.96 | Staunton Community Unit School District 6 / 8,355 |
| 665. | 2.96 | Morrisonville Community Unit School District 1 / 1,815 |
| 666. | 2.96 | Century Community Unit School District 100 / 2,852 |
| 667. | 2.96 | Madison Community Unit School District 12 / 4,929 |
| 668. | 2.96 | East Peoria Community High School District 309 / 26,308 |
| 669. | 2.96 | Triopia Community Unit School District 27 / 2,329 |
| 670. | 2.95 | Jonesboro Community Consolidated School District 43 / 3,132 |
| 671. | 2.95 | Farmington Central Community Unit School District 265 / 8,099 |
| 672. | 2.95 | Riverdale Community Unit School District 100 / 6,535 |
| 673. | 2.95 | Armstrong-Ellis Consolidated School District 61 / 986 |
| 674. | 2.95 | Avon Community Unit School District 176 / 1,854 |
| 675. | 2.95 | Putnam County Community Unit School District 535 / 5,397 |
| 676. | 2.95 | Blue Ridge Community Unit School District 18 / 5,134 |
| 677. | 2.95 | Palestine Community Unit School District 3 / 2,345 |
| 678. | 2.95 | Red Bud Community Unit School District 132 / 7,620 |
| 679. | 2.95 | Grayville Community Unit School District 1 / 2,269 |
| 680. | 2.95 | Pekin Community High School District 303 / 45,753 |
| 681. | 2.95 | St. Joseph-Ogden Community High School District 305 / 7,927 |
| 682. | 2.95 | Jasper County Community Unit School District 1 / 9,531 |
| 683. | 2.95 | Giant City Community Consolidated School District 130 / 2,344 |
| 684. | 2.95 | Pleasant Hill School District 69 / 1,992 |
| 685. | 2.94 | St. Anne Consolidated Community School District 256 / 2,769 |
| 686. | 2.94 | Elwood Community Consolidated School District 203 / 3,243 |
| 687. | 2.94 | Community Consolidated School District 204 / 4,182 |
| 688. | 2.94 | Pekin Public School District108 / 33,703 |
| 689. | 2.94 | Urbana School District 116 / 50,537 |
| 690. | 2.94 | Salt Creek School District 48 / 9,136 |
| 691. | 2.94 | Geneseo Community Unit School District 228 / 15,508 |
| 692. | 2.94 | Wesclin Community Unit School District 3 / 7,908 |
| 693. | 2.94 | Community Unit School District 2 / 5,639 |
| 694. | 2.94 | Geff Community Consolidated School District 14 / 975 |
| 695. | 2.94 | Tuscola Community Unit School District 301 / 5,749 |
| 696. | 2.94 | West Northfield School District 31 / 9,769 |
| 697. | 2.93 | Hamilton County Community Unit School District 10 / 7,757 |
| 698. | 2.93 | Nashville Consolidated Community School District 49 / 5,602 |
| 699. | 2.93 | St. Joseph Community Consolidated School District 169 / 5,887 |
| 700. | 2.93 | Cherry School District 92 / 495 |
| 701. | 2.93 | Lewistown Community Unit School District 97 / 5,092 |
| 702. | 2.93 | River Bend Community Unit District 2 / 6,730 |
| 703. | 2.93 | Morton Community Unit School District 709 / 18,698 |
| 704. | 2.93 | West Lincoln-Broadwell Elementary School District 92 / 5,537 |
| 705. | 2.93 | Nashville Community High School District 99 / 9,097 |
| 706. | 2.93 | Gallatin Community Unit School District 7 / 5,582 |
| 707. | 2.93 | Grass Lake School District 36 / 2,759 |
| 708. | 2.93 | Olympia Community Unit School District 16 / 11,910 |
| 709. | 2.93 | West Central Community Unit School District 235 / 6,536 |
| 710. | 2.92 | Panhandle Community Unit School District 2 / 3,394 |
| 711. | 2.92 | Heritage Community Unit School District 8 / 2,757 |
| 712. | 2.92 | Willow Grove School District 46 / 2,202 |
| 713. | 2.92 | East Peoria School District 86 / 18,734 |
| 714. | 2.92 | West Washington County Community Unit District 10 / 4,147 |
| 715. | 2.92 | United Community School District 304 / 6,514 |
| 716. | 2.92 | Paxton-Buckley-Loda Community Unit School District 10 / 8,694 |
| 717. | 2.92 | Carlinville Community Unit School District 1 / 9,101 |
| 718. | 2.92 | Palos Heights School District 128 / 10,015 |
| 719. | 2.92 | Hall High School District 502 / 9,213 |
| 720. | 2.92 | Shelbyville Community Unit School District 4 / 7,669 |
| 721. | 2.92 | Eldorado Community Unit School District 4 / 7,364 |
| 722. | 2.92 | East Alton School District 13 / 7,815 |
| 723. | 2.92 | Peru Elementary School District 124 / 10,434 |
| 724. | 2.92 | Henry-Senachwine Consolidated Unit School District 5 / 3,905 |
| 725. | 2.91 | Sullivan Community Unit School District 300 / 7,021 |
| 726. | 2.91 | Crab Orchard Community Unit School District 3 / 2,359 |
| 727. | 2.91 | Waverly Community Unit School District 6 / 1,720 |
| 728. | 2.91 | Payson Community Unit School District 1 / 3,569 |
| 729. | 2.91 | East Dubuque Community Unit School District 119 / 4,325 |
| 730. | 2.91 | Princeton High School District 500 / 12,550 |
| 731. | 2.91 | Porta Community Unit School District 202 / 6,840 |
| 732. | 2.91 | Dalzell School District 98 / 807 |
| 733. | 2.91 | Armstrong Township High School District 225 / 1,401 |
| 734. | 2.91 | Ashley Community Consolidated School District 15 / 2,211 |
| 735. | 2.91 | Spoon River Valley Community Unit School District 4 / 2,187 |
| 736. | 2.90 | Fairfield Community High School District 225 / 10,396 |
| 737. | 2.90 | Casey-Westfield Community Unit School District 4C / 6,066 |
| 738. | 2.90 | Bunker Hill Community Unit School District 8 / 4,318 |
| 739. | 2.90 | Chester Community Unit School District 139 / 11,196 |
| 740. | 2.90 | Meredosia-Chambersburg Community Unit School District 11 / 1,660 |
| 741. | 2.90 | Cypress School District 64 / 901 |
| 742. | 2.90 | Gifford Community Consolidated School District 188 / 1,639 |
| 743. | 2.90 | DeLand-Weldon Community Unit School District 57 / 1,400 |
| 744. | 2.90 | Litchfield Community Unit School District 12 / 9,051 |
| 745. | 2.90 | Abingdon Community Unit School District 217 / 4,177 |
| 746. | 2.90 | Lowpoint-Washburn Community Unit School District 21 / 2,286 |
| 747. | 2.89 | Limestone Walters Community Consolidated School District 316 / 1,729 |
| 748. | 2.89 | Hillsboro Community Unit School District 3 / 13,260 |
| 749. | 2.89 | Mount Pulaski Community Unit District 23 / 3,775 |
| 750. | 2.89 | Prairieview-Ogden Community Consolidated School District 197 / 2,332 |
| 751. | 2.89 | Norris City-Omaha-Enfield Community Unit School District 3 / 4,437 |
| 752. | 2.89 | Jacksonville School District 117 / 29,109 |
| 753. | 2.89 | Sandoval Community Unit School District 501 / 2,820 |
| 754. | 2.89 | Sparta Community Unit School District 140 / 8,772 |
| 755. | 2.89 | Princeton Elementary School District 115 / 11,668 |
| 756. | 2.89 | Spring Lake Community Consolidated School District 606 / 775 |
| 757. | 2.88 | Woodland Community Unit School District 5 / 3,064 |
| 758. | 2.88 | Astoria Community Unit School District 1 / 2,002 |
| 759. | 2.88 | Germantown School District 60 / 1,746 |
| 760. | 2.88 | V.I.T. Community Unit School District 2 / 2,518 |
| 761. | 2.88 | South Pekin School District 137 / 1,974 |
| 762. | 2.88 | Anna Community Consolidated School District 37 / 7,124 |
| 763. | 2.88 | Illini West High School District 307 / 8,749 |
| 764. | 2.88 | Tri-City Community Unit School District 1 / 3,064 |
| 765. | 2.88 | Carthage Elementary School District 317 / 4,279 |
| 766. | 2.88 | Fulton County Community Unit School District 3 / 3,495 |
| 767. | 2.88 | Nettle Creek Community Consolidated School District 24C / 860 |
| 768. | 2.87 | Thomasboro Community Consolidated School District 130 / 2,464 |
| 769. | 2.87 | Argenta-Oreana Community Unit School District 1 / 4,371 |
| 770. | 2.87 | Wayne City Community Unit School District 100 / 3,129 |
| 771. | 2.87 | Richland School District 88A / 10,559 |
| 772. | 2.87 | Anna Jonesboro Community High School District 81 / 11,336 |
| 773. | 2.87 | Harrisburg Community Unit School District 3 / 12,869 |
| 774. | 2.87 | Taylorville Community Unit School District 3 / 18,790 |
| 775. | 2.87 | Riverton Community Unit School District 14 / 8,128 |
| 776. | 2.87 | Lostant Community Unit School District 425 / 792 |
| 777. | 2.87 | Greenfield Community Unit School District 10 / 2,913 |
| 778. | 2.86 | Shiloh Community Unit School District 1 / 3,183 |
| 779. | 2.86 | Lincoln Community High School District 404 / 22,908 |
| 780. | 2.86 | Knoxville Community Unit School District 202 / 5,998 |
| 781. | 2.86 | Mattoon Community Unit School District 2 / 22,709 |
| 782. | 2.86 | Virden Community Unit School District 4 / 5,020 |
| 783. | 2.86 | Ina Community Consolidated School District 8 / 3,199 |
| 784. | 2.86 | New Holland-Middletown Elementary School District 88 / 1,139 |
| 785. | 2.86 | Southeastern Community Unit School District 337 / 3,010 |
| 786. | 2.85 | Fisher Community Unit School District 1 / 3,081 |
| 787. | 2.85 | Mount Olive Community Unit School District 5 / 3,543 |
| 788. | 2.85 | Community Unit School District 4 / 4,160 |
| 789. | 2.85 | Carrier Mills-Stonefort Community Unit School District / 2,841 |
| 790. | 2.85 | Woodlawn Community High School District 205 / 3,093 |
| 791. | 2.85 | Illini Central Community Unit School District 189 / 5,118 |
| 792. | 2.85 | Tri-Point Community Unit School District 6-J / 2,594 |
| 793. | 2.85 | Iroquois County Community Unit School District 9 / 7,236 |
| 794. | 2.85 | West Richland Community Unit School District 2 / 2,168 |
| 795. | 2.85 | Lawrence County Community Unit District 20 / 8,771 |
| 796. | 2.84 | Mercer County School District 404 / 8,819 |
| 797. | 2.84 | Oregon Community Unit School District 220 / 10,898 |
| 798. | 2.84 | North Wamac School District 186 / 817 |
| 799. | 2.84 | Galesburg Community Unit School District 205 / 35,351 |
| 800. | 2.84 | Pope County Community Unit School District 1 / 4,426 |
| 801. | 2.84 | Leland Community Unit School District 1 / 1,502 |
| 802. | 2.83 | Raccoon Consolidated School District 1 / 2,138 |
| 803. | 2.83 | Ladd Community Consolidated School District 94 / 1,583 |
| 804. | 2.83 | Martinsville Community Unit School District 3C / 2,224 |
| 805. | 2.83 | Nauvoo-Colusa Community Unit School District 325 / 1,937 |
| 806. | 2.82 | Cerro Gordo Community Unit School District 100 / 2,775 |
| 807. | 2.82 | Lincoln Elementary School District 27 / 12,934 |
| 808. | 2.82 | Canton Union School District 66 / 18,029 |
| 809. | 2.82 | Hoyleton Consolidated School District 29 / 1,000 |
| 810. | 2.82 | Havana Community Unit School District 126 / 6,532 |
| 811. | 2.82 | East Coloma School District 12 / 2,491 |
| 812. | 2.82 | Coulterville Unit School District 1 / 1,738 |
| 813. | 2.82 | Fairfield Public School District 112 / 6,177 |
| 814. | 2.80 | Allen Township Community Consolidated School District 65 / 992 |
| 815. | 2.80 | Alwood Community Unit School District 225 / 2,197 |
| 816. | 2.80 | Paris Community Unit School District 4 / 4,467 |
| 817. | 2.80 | Riverview Consolidated Community School District 2 / 2,875 |
| 818. | 2.80 | Harmony Emge School District 175 / 9,740 |
| 819. | 2.80 | McClellan Community Consolidated School District 12 / 912 |
| 820. | 2.79 | Damiansville School District 62 / 851 |
| 821. | 2.79 | Gillespie Community Unit School District 7 / 7,990 |
| 822. | 2.79 | Red Hill Community Unit School District 10 / 8,110 |
| 823. | 2.79 | Woodlawn Community Consolidated School District 4 / 2,464 |
| 824. | 2.78 | Scales Mound Community Unit School District 211 / 1,972 |
| 825. | 2.78 | Franklin Community Unit School District 1 / 1,791 |
| 826. | 2.78 | Chadwick-Milledgeville Community Unit School District 399 / 3,513 |
| 827. | 2.78 | Galva Community Unit School District 224 / 3,588 |
| 828. | 2.77 | Charleston Community Unit School District 1 / 28,363 |
| 829. | 2.77 | Irvington County Community Unit School District 11 / 787 |
| 830. | 2.76 | Flanagan-Cornell District 74 in Pontiac / 47 |
| 831. | 2.76 | Cambridge Community Unit School District 227 / 3,100 |
| 832. | 2.76 | Eastland Community Unit School District 308 / 4,447 |
| 833. | 2.76 | Wallace Community Consolidated School District 195 / 2,572 |
| 834. | 2.76 | Stockton Community Unit School District 206 / 4,004 |
| 835. | 2.76 | Pleasant Hill Community Unit School District 3 / 2,195 |
| 836. | 2.75 | Vienna High School District 133 / 9,730 |
| 837. | 2.75 | Milford Community Consolidated School District 280 / 3,802 |
| 837. | 2.75 | Milford Township High School District 233 / 3,802 |
| 839. | 2.75 | Rankin Community School District 98 / 3,709 |
| 840. | 2.75 | High Mount School District 116 / 4,323 |
| 841. | 2.74 | Peoria Heights Community Unit School District 325 / 7,512 |
| 842. | 2.74 | Rome Community Consolidated School District 2 / 2,715 |
| 843. | 2.73 | West Prairie Community Unit School District 103 / 4,657 |
| 844. | 2.73 | Monroe School District 70 / 2,842 |
| 844. | 2.73 | Neponset Community Consolidated District 307 / 846 |
| 846. | 2.73 | Sesser-Valier Community Unit School District 196 / 4,306 |
| 847. | 2.72 | Brown County Community Unit School District 1 / 6,896 |
| 848. | 2.72 | Warren Community Unit School District 205 / 2,669 |
| 849. | 2.72 | Carrollton Community Unit School District 1 / 3,996 |
| 850. | 2.72 | Crescent Iroquois Community Unit School District 249 / 978 |
| 851. | 2.72 | Oakland Community Unit School District 5 / 2,097 |
| 852. | 2.72 | Bushnell-Prairie City Community Unit School District 170 / 4,507 |
| 853. | 2.71 | Carmi-White County Community Unit School District 5 / 9,473 |
| 854. | 2.70 | Macomb Community Unit School District 185 / 22,685 |
| 855. | 2.70 | Vienna School District 55 / 5,124 |
| 856. | 2.70 | Sherrard Community Unit School District 200 / 9,197 |
| 857. | 2.70 | Atwood-Hammond Community Unit School District 39 / 2,215 |
| 858. | 2.69 | Hollis Consolidated School District 328 / 623 |
| 859. | 2.69 | Dongola School Unit District 66 / 1,849 |
| 860. | 2.68 | River Ridge Community Unit School District 210 / 4,050 |
| 861. | 2.68 | New Simpson Hill Consolidated District 32 / 3,182 |
| 862. | 2.67 | Farrington Community Consolidated School District 99 / 484 |
| 863. | 2.67 | West Carroll Community Unit School District 314 / 8,728 |
| 864. | 2.66 | Dallas Elementary School District 327 / 2,152 |
| 865. | 2.65 | Galena Unit School District 120 / 5,628 |
| 866. | 2.62 | Lick Creek Community Consolidated School District 16 / 1,080 |
| 867. | 2.61 | Goreville Community Unit School District 1 / 2,984 |
| 868. | 2.60 | Rooks Creek Community Consolidated School District 425 / 441 |
| 869. | 2.57 | Summersville School District 79 / 1,859 |
| 870. | 2.56 | Leepertown Community Consolidated School District 175 / 321 |
| 871. | 2.43 | Williamsfield Community Unit School District 210 / 1,738 |
Please note that we only rank locations with 'Average Family Size' data. The rank above might not be a complete list. Locations without 'Average Family Size' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
