| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.85 | Northeast Nodaway County R-V School District / 1,523 |
| 2. | 3.82 | Moniteau County R-V School District / 949 |
| 3. | 3.73 | Wellston School District / 2,613 |
| 4. | 3.73 | Tri-County R-VII School District / 2,140 |
| 5. | 3.68 | Pettis County R-XII School District / 1,194 |
| 6. | 3.67 | Middle Grove C-1 School District / 646 |
| 7. | 3.67 | Kingston K-14 School District / 5,919 |
| 8. | 3.67 | Plainview R-VIII School District / 1,205 |
| 9. | 3.64 | North Harrison R-III School District / 1,577 |
| 10. | 3.64 | Richwoods R-VII School District / 1,340 |
| 11. | 3.62 | Dadeville R-II School District / 1,071 |
| 12. | 3.57 | Hayti R-II School District / 4,092 |
| 13. | 3.55 | Avilla R-XIII School District / 1,440 |
| 14. | 3.53 | Maysville R-I School District / 4,098 |
| 15. | 3.53 | Seymour R-II School District / 6,635 |
| 16. | 3.53 | McDonald County R-I School District / 18,038 |
| 17. | 3.51 | High Point R-III School District / 751 |
| 18. | 3.50 | Gorin R-III School District / 483 |
| 19. | 3.48 | Jefferson C-123 School District / 813 |
| 20. | 3.47 | Elsberry R-II School District / 5,033 |
| 21. | 3.47 | Ava R-I School District / 8,624 |
| 22. | 3.46 | Waynesville R-VI Schools / 33,852 |
| 23. | 3.46 | Howell Valley R-I School District / 2,375 |
| 24. | 3.45 | East Prairie R-II School District / 5,655 |
| 25. | 3.45 | Gentry County R-II School District / 2,066 |
| 26. | 3.45 | Leopold R-III School District / 1,036 |
| 27. | 3.43 | Zalma R-V School District / 1,792 |
| 28. | 3.43 | Spickard R-II School District / 607 |
| 29. | 3.43 | La Monte R-IV School District / 1,978 |
| 30. | 3.43 | Livingston County R-III School District / 686 |
| 31. | 3.42 | Sturgeon R-V School District / 3,532 |
| 32. | 3.41 | Winona R-III School District / 3,175 |
| 33. | 3.40 | Luray 33 School District / 517 |
| 34. | 3.39 | Gideon School District / 1,711 |
| 35. | 3.39 | South Pemiscot Schools / 3,558 |
| 36. | 3.38 | Bunker R-III School District / 1,669 |
| 37. | 3.38 | Hancock Place School District / 7,641 |
| 38. | 3.37 | Halfway R-III School District / 2,489 |
| 39. | 3.37 | Adrian County R-III School District / 4,315 |
| 40. | 3.37 | Caruthersville School District / 6,163 |
| 41. | 3.36 | La Plata R-II School District / 2,717 |
| 42. | 3.36 | North Wood R-IV School District / 1,992 |
| 43. | 3.36 | Green Ridge R-VIII School District / 2,480 |
| 44. | 3.36 | Pleasant Hope R-VI School District / 5,543 |
| 45. | 3.36 | Richards R-V School District / 3,268 |
| 46. | 3.35 | Linn County R-I School District / 1,617 |
| 47. | 3.35 | Troy R-III School District / 31,506 |
| 48. | 3.35 | Prairie Home R-V School District / 1,199 |
| 49. | 3.35 | Cole County R-II School District / 6,325 |
| 50. | 3.34 | Milan C-2 School District / 3,653 |
| 51. | 3.34 | Winfield School District / 9,961 |
| 52. | 3.34 | Fort Osage R-I School District / 25,536 |
| 53. | 3.34 | Jefferson County R-VII School District / 6,485 |
| 54. | 3.34 | Carthage R-IX School District / 22,931 |
| 55. | 3.33 | Renick R-V School District / 1,524 |
| 56. | 3.33 | Canton School District / 4,835 |
| 57. | 3.33 | Brookfield R-III School District / 6,521 |
| 58. | 3.33 | Shawnee R-III School District / 765 |
| 59. | 3.32 | Steelville School District / 5,369 |
| 60. | 3.31 | Lawson R-XIV School District / 6,012 |
| 61. | 3.31 | Crocker School District / 3,420 |
| 62. | 3.31 | Oak Grove R-VI School District / 10,852 |
| 63. | 3.31 | Crane R-III School District / 4,244 |
| 64. | 3.30 | Delta R-V School District / 2,524 |
| 65. | 3.30 | Meadville R-IV School District / 1,205 |
| 66. | 3.30 | Hickman Mills C-1 School District / 49,600 |
| 67. | 3.30 | Riverview Gardens School District / 39,474 |
| 68. | 3.29 | Cooter R-IV School District / 879 |
| 69. | 3.29 | Ripley County R-III School District / 976 |
| 70. | 3.29 | New Haven School District / 2,798 |
| 71. | 3.29 | Bronaugh R-VII School District / 1,747 |
| 72. | 3.29 | Skyline R-II School District / 1,347 |
| 73. | 3.28 | Clarksburg C-2 School District / 849 |
| 74. | 3.28 | East Newton County R-VI School District / 8,911 |
| 75. | 3.28 | Junction Hill C-12 School District / 1,857 |
| 76. | 3.28 | Fort Zumwalt R-II School District / 107,910 |
| 77. | 3.27 | Scott City R-I School District / 5,550 |
| 78. | 3.27 | Neosho R-5 School District / 26,716 |
| 79. | 3.27 | Green Forest R-II School District / 2,251 |
| 80. | 3.27 | East Lynne 40 School District / 1,410 |
| 81. | 3.26 | Purdy R-II School District / 3,956 |
| 82. | 3.26 | Jennings School District / 17,982 |
| 83. | 3.26 | Pettis County R-V School District / 2,186 |
| 84. | 3.26 | Clark County R-I School District / 5,908 |
| 85. | 3.26 | Kansas City School District / 193,976 |
| 86. | 3.25 | Cabool School District / 5,863 |
| 87. | 3.25 | Hardin-Central C-2 School District / 1,071 |
| 88. | 3.25 | Phelps County R-III School District / 1,899 |
| 89. | 3.25 | Leeton R-X School District / 2,146 |
| 90. | 3.24 | Scott County R-IV School District / 5,546 |
| 91. | 3.24 | Northeast Randolph County R-IV School District / 1,860 |
| 92. | 3.24 | Osage County R-III School District / 6,594 |
| 93. | 3.24 | Verona R-VII School District / 2,508 |
| 94. | 3.24 | Silex R-I School District / 2,598 |
| 95. | 3.24 | East Carter County R-II School District / 4,328 |
| 96. | 3.24 | St. Clair R-XIII School District / 12,148 |
| 97. | 3.23 | Crawford County R-I School District / 6,906 |
| 98. | 3.23 | Rockwood School District / 114,214 |
| 99. | 3.23 | Miami R-I School District / 1,316 |
| 100. | 3.23 | Naylor R-II School District / 1,900 |
| 101. | 3.23 | St. Louis City School District / 318,809 |
| 102. | 3.22 | Union Star R-II School District / 1,031 |
| 103. | 3.22 | Thayer R-II School District / 4,528 |
| 104. | 3.22 | Marquand-Zion School District / 1,643 |
| 105. | 3.22 | Southwest R-V School District / 4,240 |
| 106. | 3.22 | Sedalia 200 School District / 29,894 |
| 107. | 3.21 | Hume R-VIII School District / 757 |
| 108. | 3.21 | Monett R-I School District / 13,037 |
| 109. | 3.21 | Plato R-V School District / 3,666 |
| 110. | 3.21 | South Nodaway County R-IV School District / 828 |
| 111. | 3.21 | Oran R-III School District / 2,306 |
| 112. | 3.21 | Charleston R-I School District / 8,488 |
| 113. | 3.21 | Wentzville R-IV School District / 64,299 |
| 114. | 3.21 | Green City R-I School District / 2,012 |
| 115. | 3.20 | Webb City R-VII School District / 20,858 |
| 116. | 3.20 | Fox C-6 School District / 68,022 |
| 117. | 3.20 | De Soto School District / 17,228 |
| 118. | 3.20 | Grandview R-II School District / 4,716 |
| 119. | 3.20 | Strasburg C-3 School District / 950 |
| 120. | 3.20 | Lonedell R-XIV School District / 3,064 |
| 121. | 3.20 | Windsor C-1 School District / 17,643 |
| 122. | 3.20 | Grain Valley R-V School District / 15,926 |
| 123. | 3.19 | Hillsboro R-III School District / 20,747 |
| 124. | 3.19 | Marceline R-V School District / 3,810 |
| 125. | 3.19 | Northwest R-I School District / 45,192 |
| 126. | 3.19 | Miami R-I School District / 561 |
| 127. | 3.19 | New Bloomfield R-III School District / 4,226 |
| 128. | 3.19 | Seneca R-VII School District / 7,890 |
| 129. | 3.18 | Norwood R-I School District / 2,317 |
| 130. | 3.18 | Butler R-V School District / 6,495 |
| 131. | 3.18 | Festus R-6 School District / 16,911 |
| 132. | 3.18 | Knob Noster R-VIII School District / 8,796 |
| 133. | 3.18 | Meadow Heights R-II School District / 3,822 |
| 134. | 3.18 | Hazelwood School District / 123,197 |
| 135. | 3.18 | Mountain Grove R-III School District / 9,655 |
| 136. | 3.18 | Cole County R-I School District / 4,178 |
| 137. | 3.18 | Lee's Summit R-7 School District / 87,399 |
| 138. | 3.17 | New York R-IV School District / 227 |
| 139. | 3.17 | Cooper County C-4 School District / 916 |
| 140. | 3.17 | Spring Bluff R-XV School District / 1,906 |
| 141. | 3.17 | Kearney R-I School District / 18,620 |
| 142. | 3.17 | Pleasant Hill R-III School District / 11,135 |
| 143. | 3.17 | Buchanan County R-IV School District / 2,199 |
| 144. | 3.17 | Adair County R-II School District / 1,497 |
| 145. | 3.17 | Blackwater R-II School District / 895 |
| 146. | 3.17 | Scott County R-II School District / 3,782 |
| 147. | 3.17 | Willow Springs R-IV School District / 7,942 |
| 148. | 3.17 | Richland R-I School District / 1,930 |
| 149. | 3.16 | Pilot Grove C-4 School District / 1,889 |
| 150. | 3.16 | Sunrise R-IX School District / 3,393 |
| 151. | 3.16 | Shelby County C-1 School District / 2,153 |
| 152. | 3.16 | Moberly School District / 16,330 |
| 153. | 3.16 | Meramec Valley R-III School District / 22,470 |
| 154. | 3.16 | Francis Howell School District / 112,417 |
| 155. | 3.16 | Grandview C-4 School District / 31,671 |
| 156. | 3.16 | Union R-XI School District / 19,850 |
| 157. | 3.16 | St. Joseph School District / 79,663 |
| 158. | 3.16 | Liberty Schools / 48,739 |
| 159. | 3.15 | Avenue City R-IX School District / 1,121 |
| 160. | 3.15 | Van Buren R-I School District / 2,560 |
| 161. | 3.15 | Moniteau County R-VI School District / 5,336 |
| 162. | 3.15 | Marshall School District / 14,839 |
| 163. | 3.15 | Licking School District / 6,421 |
| 164. | 3.15 | Marshfield R-I School District / 17,943 |
| 165. | 3.15 | Neelyville R-IV School District / 3,497 |
| 166. | 3.14 | Chillicothe R-II School District / 12,476 |
| 167. | 3.14 | Sullivan School District / 11,606 |
| 168. | 3.14 | New Madrid County R-I School District / 9,827 |
| 169. | 3.14 | Arcadia Valley R-II School District / 6,099 |
| 170. | 3.14 | Ridgeway R-V School District / 740 |
| 171. | 3.13 | Rolla 31 School District / 31,265 |
| 172. | 3.13 | Lathrop R-II School District / 4,842 |
| 173. | 3.13 | Niangua R-V School District / 1,934 |
| 174. | 3.13 | Exeter R-VI School District / 2,257 |
| 175. | 3.13 | Scott County Central Schools / 2,006 |
| 176. | 3.13 | Delta C-7 School District / 982 |
| 177. | 3.13 | Normandy School District / 35,061 |
| 178. | 3.13 | Ferguson-Florissant School District / 70,611 |
| 179. | 3.13 | Belton 124 School District / 26,230 |
| 180. | 3.13 | Northwestern R-I School District / 909 |
| 181. | 3.12 | Raytown C-2 School District / 57,749 |
| 182. | 3.12 | Lockwood R-I School District / 2,308 |
| 183. | 3.12 | North Pemiscot County R-I School District / 1,817 |
| 184. | 3.12 | Dallas County R-I School District / 13,394 |
| 185. | 3.12 | Blue Springs R-IV School District / 75,631 |
| 186. | 3.12 | King City R-I School District / 1,874 |
| 187. | 3.12 | Portageville School District / 4,060 |
| 188. | 3.12 | Wheaton R-III School District / 1,892 |
| 189. | 3.12 | Kelso C-7 School District / 2,030 |
| 190. | 3.12 | Mid-Buchanan County R-V School District / 4,366 |
| 191. | 3.12 | Bernie School District / 3,497 |
| 192. | 3.12 | Warren County R-III School District / 18,630 |
| 193. | 3.11 | Polo R-VII School District / 2,097 |
| 194. | 3.11 | Ritenour School District / 44,324 |
| 195. | 3.11 | South Harrison School District / 5,490 |
| 196. | 3.11 | Valley Park School District / 8,294 |
| 197. | 3.11 | Fair Grove R-10 School District / 5,000 |
| 198. | 3.11 | Raymore-Peculiar R-II School District / 31,234 |
| 199. | 3.11 | Bucklin R-II School District / 1,065 |
| 200. | 3.11 | Independence Public Schools / 93,240 |
| 201. | 3.11 | Nevada R-V School District / 14,877 |
| 202. | 3.11 | Kingsville R-I School District / 2,123 |
| 203. | 3.10 | Senath-Hornersville C-8 School District / 4,697 |
| 204. | 3.10 | Strain-Japan R-XVI School District / 881 |
| 205. | 3.10 | Johnson County R-VII School District / 2,964 |
| 206. | 3.10 | Harrisonville R-IX School District / 13,996 |
| 207. | 3.10 | Osage County R-II School District / 5,080 |
| 208. | 3.10 | Bakersfield R-IV School District / 1,505 |
| 209. | 3.10 | Braymer C-4 School District / 1,838 |
| 210. | 3.10 | Diamond R-IV School District / 5,868 |
| 211. | 3.09 | Name N/A / 97,299 |
| 212. | 3.09 | Webster Groves School District / 31,515 |
| 213. | 3.09 | Moniteau County C-1 School District / 1,380 |
| 214. | 3.09 | Dixon R-I School District / 5,863 |
| 215. | 3.09 | Washington School District / 31,281 |
| 216. | 3.09 | Aurora R-8 School District / 10,592 |
| 217. | 3.09 | Fredericktown R-I School District / 10,506 |
| 218. | 3.09 | Southwest Livingston County R-I School District / 1,208 |
| 219. | 3.09 | Crystal City 47 School District / 3,996 |
| 220. | 3.08 | Poplar Bluff R-I School District / 32,787 |
| 221. | 3.08 | Hurley R-I School District / 1,897 |
| 222. | 3.08 | Summersville R-II School District / 3,132 |
| 223. | 3.08 | Lone Jack C-6 School District / 2,779 |
| 224. | 3.08 | Smithton R-VI School District / 2,835 |
| 225. | 3.08 | Mount Vernon R-V School District / 9,136 |
| 226. | 3.08 | Joplin R-VIII School District / 59,399 |
| 227. | 3.08 | Franklin County R-II School District / 1,546 |
| 228. | 3.08 | Marion County Early R-V School District / 3,913 |
| 229. | 3.07 | Crawford County R-2 School District / 9,085 |
| 230. | 3.07 | Mirabile C-1 School District / 367 |
| 231. | 3.07 | East Buchanan County C-1 School District / 4,562 |
| 232. | 3.07 | North Nodaway County R-VI School District / 1,248 |
| 233. | 3.07 | Dunklin R-V School District / 9,372 |
| 234. | 3.07 | North Daviess R-III School District / 881 |
| 235. | 3.07 | Carl Junction R-I School District / 15,162 |
| 236. | 3.07 | Maries County R-I School District / 4,372 |
| 237. | 3.07 | Lamar R-I School District / 7,543 |
| 238. | 3.07 | Rich Hill R-IV School District / 2,612 |
| 239. | 3.07 | Northeast Vernon County R-I School District / 2,138 |
| 240. | 3.06 | Park Hill School District / 61,509 |
| 241. | 3.06 | Malden R-I School District / 6,348 |
| 242. | 3.06 | Fair Play R-II School District / 2,447 |
| 243. | 3.06 | Perry County 32 School District / 17,662 |
| 244. | 3.06 | Salem R-80 School District / 6,819 |
| 245. | 3.06 | Drexel R-IV School District / 1,857 |
| 246. | 3.06 | Advance R-IV School District / 3,233 |
| 247. | 3.06 | Potosi R-III School District / 12,832 |
| 248. | 3.05 | Bloomfield School District / 4,477 |
| 249. | 3.05 | Macks Creek R-V School District / 2,487 |
| 250. | 3.05 | Community R-VI School District / 2,268 |
| 251. | 3.05 | Pike County R-III School District / 2,797 |
| 252. | 3.05 | Kirkwood School District / 40,547 |
| 253. | 3.05 | Bowling Green R-I School District / 11,991 |
| 254. | 3.05 | Bayless School District / 12,751 |
| 255. | 3.05 | Clarkton C-4 School District / 1,783 |
| 256. | 3.05 | Holden R-III School District / 8,290 |
| 257. | 3.05 | Hannibal School District / 22,444 |
| 258. | 3.05 | Van-Far School District / 5,748 |
| 259. | 3.04 | Centralia R-VI School District / 7,640 |
| 260. | 3.04 | Holcomb R-III School District / 2,654 |
| 261. | 3.04 | Tina-Avalon R-II School District / 929 |
| 262. | 3.04 | Iberia R-V School District / 4,928 |
| 263. | 3.04 | Nixa School District / 26,560 |
| 264. | 3.04 | Lebanon School District / 24,920 |
| 265. | 3.04 | North Andrew County R-VI School District / 1,778 |
| 266. | 3.04 | Trenton R-IX School District / 7,627 |
| 267. | 3.04 | Willard School District / 23,433 |
| 268. | 3.04 | Gilman City R-IV School District / 824 |
| 269. | 3.03 | Bell City R-II School District / 1,409 |
| 270. | 3.03 | Manes R-V School District / 813 |
| 271. | 3.03 | Brunswick R-II School District / 1,933 |
| 272. | 3.03 | North Mercer County R-III School District / 1,172 |
| 273. | 3.03 | North Kansas City School District / 122,557 |
| 274. | 3.03 | Cass County R-V School District / 2,925 |
| 275. | 3.03 | Midway School District / 3,404 |
| 276. | 3.03 | Sherwood Cass R-VIII School District / 4,973 |
| 277. | 3.02 | Howard County R-II School District / 2,675 |
| 278. | 3.02 | Liberal R-II School District / 3,104 |
| 279. | 3.02 | Richmond R-XVI School District / 10,109 |
| 280. | 3.02 | Smithville School District / 10,785 |
| 281. | 3.02 | Mehlville School District / 93,423 |
| 282. | 3.02 | North Callaway R-I School District / 6,700 |
| 283. | 3.02 | Concordia School District / 4,142 |
| 284. | 3.02 | Hamilton R-II School District / 4,041 |
| 285. | 3.02 | Gasconade County R-II School District / 11,563 |
| 286. | 3.02 | Taneyville R-II School District / 1,549 |
| 287. | 3.02 | Southern Boone County R-I School District / 7,779 |
| 288. | 3.02 | Laclede County C-5 School District / 4,123 |
| 289. | 3.01 | Alton R-IV School District / 4,085 |
| 290. | 3.01 | Ripley County R-IV School District / 873 |
| 291. | 3.01 | Woodland R-IV School District / 5,413 |
| 292. | 3.01 | Kennett 39 School District / 11,110 |
| 293. | 3.01 | Maryville R-II Schools / 15,490 |
| 294. | 3.01 | Fairview R-XI School District / 4,368 |
| 295. | 3.01 | Davis R-XII School District / 565 |
| 296. | 3.01 | Adair County R-I School District / 1,788 |
| 297. | 3.00 | Oregon-Howell R-III School District / 1,680 |
| 298. | 3.00 | Henry County R-I School District / 4,443 |
| 299. | 3.00 | Carrollton R-VII School District / 5,539 |
| 300. | 3.00 | Cameron R-I School District / 12,904 |
| 301. | 3.00 | Ozark R-VI School District / 28,503 |
| 302. | 3.00 | Kirbyville R-VI School District / 2,695 |
| 303. | 3.00 | Boonville School District / 11,654 |
| 304. | 3.00 | Westran R-I School District / 3,774 |
| 305. | 3.00 | Warrensburg R-VI School District / 25,403 |
| 306. | 2.99 | West Plains R-VII School District / 12,939 |
| 307. | 2.99 | Jasper County R-V School District / 2,775 |
| 308. | 2.99 | Holliday C-2 School District / 499 |
| 309. | 2.99 | Raymondville R-7 School District / 1,002 |
| 310. | 2.99 | Excelsior Springs 40 School District / 16,858 |
| 311. | 2.99 | West Platte County R-II School District / 3,884 |
| 312. | 2.99 | Branson R-IV School District / 25,292 |
| 313. | 2.99 | West St. Francis County R-IV School District / 5,527 |
| 314. | 2.99 | Mansfield R-IV School District / 4,199 |
| 315. | 2.99 | Chilhowee R-IV School District / 1,050 |
| 316. | 2.99 | Sparta R-III School District / 3,973 |
| 317. | 2.99 | Farmington R-7 School District / 27,218 |
| 318. | 2.98 | Greenfield R-IV School District / 3,282 |
| 319. | 2.98 | Lindbergh R-VIII School District / 46,476 |
| 320. | 2.98 | North St. Francis County R-I School District / 19,721 |
| 321. | 2.98 | Columbia Public Schools / 133,129 |
| 322. | 2.98 | Stet R-XV School District / 547 |
| 323. | 2.98 | Atlanta C-3 Schools / 1,316 |
| 324. | 2.98 | Greenville R-II School District / 5,211 |
| 325. | 2.98 | Clever R-V School District / 5,128 |
| 326. | 2.98 | Fordland R-III School District / 3,470 |
| 327. | 2.98 | Jefferson City Public Schools / 70,250 |
| 328. | 2.98 | Osage County R-I School District / 1,266 |
| 329. | 2.98 | Wellsville-Middletown R-I School District / 2,846 |
| 330. | 2.98 | Knox County R-I School District / 4,089 |
| 331. | 2.98 | Gallatin R-V School District / 3,386 |
| 332. | 2.98 | Houston R-I School District / 5,649 |
| 333. | 2.97 | Spokane R-VII School District / 4,727 |
| 334. | 2.97 | Sheldon R-VIII School District / 1,232 |
| 335. | 2.97 | Montgomery County R-II School District / 8,621 |
| 336. | 2.97 | Golden City School District / 1,823 |
| 337. | 2.97 | Savannah R-III School District / 13,401 |
| 338. | 2.97 | Odessa R-VII School District / 11,650 |
| 339. | 2.97 | Scotland County R-I School District / 4,355 |
| 340. | 2.97 | Cole County R-V School District / 4,580 |
| 341. | 2.97 | Ladue School District / 26,799 |
| 342. | 2.97 | Bolivar R-I School District / 15,680 |
| 343. | 2.97 | Morgan County R-II School District / 11,533 |
| 344. | 2.97 | Jackson R-II School District / 28,804 |
| 345. | 2.96 | Princeton R-V School District / 2,488 |
| 346. | 2.96 | Platte County R-III School District / 20,328 |
| 347. | 2.96 | Central R-III School District / 11,577 |
| 348. | 2.96 | St. Charles R-VI School District / 54,734 |
| 349. | 2.96 | University City School District / 36,304 |
| 350. | 2.96 | St. Charles County R-V School District / 10,031 |
| 351. | 2.96 | Shelby County R-IV School District / 4,408 |
| 352. | 2.96 | Pierce City R-VI School District / 4,406 |
| 353. | 2.96 | New Franklin R-I School District / 2,611 |
| 354. | 2.96 | Albany R-III School District / 3,045 |
| 355. | 2.96 | Slater School District / 2,336 |
| 356. | 2.96 | South Iron County R-I School District / 2,060 |
| 357. | 2.96 | Parkway School District / 138,429 |
| 358. | 2.96 | Osborn R-O School District / 689 |
| 359. | 2.96 | St. James R-I School District / 9,678 |
| 360. | 2.96 | Clearwater R-I School District / 7,087 |
| 361. | 2.96 | Twin Rivers R-X School District / 5,557 |
| 362. | 2.95 | Eldon R-I School District / 11,898 |
| 363. | 2.95 | Mexico 59 School District / 14,740 |
| 364. | 2.95 | Glenwood R-VIII School District / 2,467 |
| 365. | 2.95 | Miller R-II School District / 4,186 |
| 366. | 2.95 | Southland School District / 2,127 |
| 367. | 2.95 | Republic School District / 21,489 |
| 368. | 2.95 | West Nodaway County R-I School District / 1,870 |
| 369. | 2.95 | Oak Ridge R-VI School District / 2,011 |
| 370. | 2.95 | Moniteau County R-I School District / 6,962 |
| 371. | 2.95 | Dexter R-XI School District / 12,529 |
| 372. | 2.94 | Hale R-I School District / 918 |
| 373. | 2.94 | Pleasant View R-VI School District / 452 |
| 374. | 2.94 | Norborne R-VIII School District / 1,191 |
| 375. | 2.94 | Strafford R-VI School District / 5,914 |
| 376. | 2.94 | Hartville R-II School District / 4,355 |
| 377. | 2.94 | Kirksville R-III School District / 21,797 |
| 378. | 2.94 | Boone County R-IV School District / 6,889 |
| 379. | 2.94 | Everton R-III School District / 1,352 |
| 380. | 2.94 | Cassville R-IV School District / 11,199 |
| 381. | 2.94 | Cole Camp R-I School District / 4,632 |
| 382. | 2.94 | St. Elizabeth R-IV School District / 1,346 |
| 383. | 2.94 | Doniphan R-I School District / 10,279 |
| 384. | 2.93 | Wright City R-II School District / 9,790 |
| 385. | 2.93 | Gainesville R-V School District / 4,792 |
| 386. | 2.93 | Salisbury R-IV School District / 3,104 |
| 387. | 2.93 | Palmyra R-I School District / 6,488 |
| 388. | 2.93 | Otterville R-VI School District / 1,422 |
| 389. | 2.93 | Nell Holcomb R-IV School District / 2,959 |
| 390. | 2.93 | Laquey R-V School District / 3,860 |
| 391. | 2.92 | Iron County C-4 School District / 3,024 |
| 392. | 2.92 | Clinton School District / 11,644 |
| 393. | 2.92 | Lafayette County C-1 School District / 6,627 |
| 394. | 2.92 | Springfield School District / 202,699 |
| 395. | 2.92 | Fairfax R-III School District / 1,162 |
| 396. | 2.92 | Orrick R-XI School District / 1,920 |
| 397. | 2.92 | South Callaway R-II Schools / 4,639 |
| 398. | 2.91 | Valley R-VI School District / 2,878 |
| 399. | 2.91 | Harrisburg R-VIII School District / 3,112 |
| 400. | 2.91 | Pattonville School District / 41,590 |
| 401. | 2.91 | Dora R-III School District / 1,696 |
| 402. | 2.91 | Winston R-VI School District / 1,107 |
| 403. | 2.91 | Montrose R-XIV School District / 922 |
| 404. | 2.91 | Success R-VI School District / 924 |
| 405. | 2.91 | Center 58 School District / 25,604 |
| 406. | 2.90 | Laredo R-VII School District / 479 |
| 407. | 2.90 | Lewis County C-1 School District / 6,182 |
| 408. | 2.90 | Ste. Genevieve County R-II School District / 15,248 |
| 409. | 2.90 | Hardeman R-X School District / 464 |
| 410. | 2.90 | Cape Girardeau 63 School District / 37,975 |
| 411. | 2.90 | Bevier C-4 School District / 1,539 |
| 412. | 2.90 | Sweet Springs R-VII School District / 2,851 |
| 413. | 2.90 | Stockton R-I School District / 7,562 |
| 414. | 2.89 | Chadwick R-I School District / 1,393 |
| 415. | 2.89 | Sikeston School District / 20,780 |
| 416. | 2.89 | Ash Grove R-IV School District / 4,544 |
| 417. | 2.89 | Westview C-6 School District / 1,155 |
| 418. | 2.89 | Bradleyville R-I School District / 1,067 |
| 419. | 2.89 | North Platte County R-I School District / 3,951 |
| 420. | 2.89 | Monroe City R-I School District / 4,716 |
| 421. | 2.89 | Affton School District / 26,360 |
| 422. | 2.89 | Gilliam C-4 School District / 385 |
| 423. | 2.88 | Fayette R-III School District / 4,730 |
| 424. | 2.88 | Macon County R-I School District / 8,353 |
| 425. | 2.88 | Wellington-Napoleon R-IX School District / 2,522 |
| 426. | 2.88 | Belleview R-III School District / 1,251 |
| 427. | 2.87 | Camden County R-II School District / 2,673 |
| 428. | 2.87 | Sarcoxie R-II School District / 3,407 |
| 429. | 2.87 | Cainsville R-I School District / 438 |
| 430. | 2.87 | Mountain View-Birch Tree R-III School District / 6,697 |
| 431. | 2.87 | Gasconade County R-I School District / 7,709 |
| 432. | 2.87 | Laclede County R-I School District / 3,473 |
| 433. | 2.87 | Dent-Phelps R-III School District / 2,271 |
| 434. | 2.87 | Greene County R-VIII School District / 11,819 |
| 435. | 2.87 | Bosworth R-V School District / 731 |
| 436. | 2.86 | Weaubleau R-III School District / 3,163 |
| 437. | 2.86 | Pemiscot County R-3 School District / 873 |
| 438. | 2.86 | Walnut Grove R-V School District / 1,936 |
| 439. | 2.85 | Lutie R-VI School District / 1,608 |
| 440. | 2.85 | Marion County R-II School District / 1,319 |
| 441. | 2.85 | Maries County R-II School District / 5,046 |
| 442. | 2.85 | Billings R-IV School District / 2,932 |
| 443. | 2.84 | Newtown-Harris R-III School District / 514 |
| 444. | 2.84 | Grundy County R-V School District / 1,040 |
| 445. | 2.84 | Calhoun R-VIII School District / 1,050 |
| 446. | 2.83 | Lexington R-V School District / 5,818 |
| 447. | 2.83 | Appleton City R-II School District / 2,480 |
| 448. | 2.83 | Hudson R-IX School District / 353 |
| 449. | 2.83 | Callao C-8 School District / 684 |
| 450. | 2.82 | Campbell R-II School District / 3,626 |
| 451. | 2.82 | Hickory County R-I School District / 4,936 |
| 452. | 2.82 | Maplewood-Richmond Heights School District / 14,529 |
| 453. | 2.82 | Nodaway-Holt R-VII School District / 1,800 |
| 454. | 2.82 | Hollister R-V School District / 10,742 |
| 455. | 2.82 | Galena R-II School District / 3,177 |
| 456. | 2.82 | Brentwood School District / 8,063 |
| 457. | 2.81 | Craig R-III School District / 865 |
| 458. | 2.81 | Risco R-II School District / 673 |
| 459. | 2.81 | Clayton School District / 19,788 |
| 460. | 2.81 | Clinton County R-III School District / 4,942 |
| 461. | 2.80 | Centerville R-I School District / 826 |
| 462. | 2.80 | Ralls County R-II School District / 5,779 |
| 463. | 2.80 | Malta Bend R-V School District / 673 |
| 464. | 2.80 | Bismarck R-V School District / 3,596 |
| 465. | 2.79 | South Holt County R-I School District / 1,742 |
| 466. | 2.79 | Lincoln R-II School District / 4,204 |
| 467. | 2.79 | Fulton School District / 19,005 |
| 468. | 2.78 | Pattonsburg R-II School District / 1,035 |
| 469. | 2.78 | Macon County R-IV School District / 935 |
| 470. | 2.78 | Stewartsville C-2 School District / 1,224 |
| 471. | 2.77 | Newburg R-II School District / 2,791 |
| 472. | 2.77 | Swedeborg R-III School District / 583 |
| 473. | 2.77 | Tarkio R-I School District / 2,308 |
| 474. | 2.77 | Rock Port R-II School District / 2,341 |
| 475. | 2.76 | School of The Osage R-II School District / 11,650 |
| 476. | 2.76 | Camdenton R-III School District / 29,639 |
| 477. | 2.76 | Mark Twain R-VIII School District / 514 |
| 478. | 2.75 | Lakeland R-III School District / 2,659 |
| 479. | 2.75 | Pulaski County R-IV School District / 3,437 |
| 480. | 2.74 | Southern Reynolds County R-IV School District / 3,105 |
| 481. | 2.74 | Revere C-3 School District / 630 |
| 482. | 2.73 | Oak Hill R-I School District / 1,663 |
| 483. | 2.73 | Madison C-3 School District / 1,471 |
| 484. | 2.72 | Osceola School District / 3,024 |
| 485. | 2.72 | Ballard R-II School District / 734 |
| 486. | 2.72 | Schuyler County R-I School District / 4,726 |
| 487. | 2.72 | Eminence R-I School District / 2,042 |
| 488. | 2.72 | El Dorado Springs R-II School District / 7,364 |
| 489. | 2.71 | Morgan County R-I School District / 5,357 |
| 490. | 2.70 | Santa Fe R-X School District / 2,451 |
| 491. | 2.70 | Thornfield R-I School District / 655 |
| 492. | 2.70 | Putnam County R-I School District / 4,669 |
| 493. | 2.69 | Blue Eye School District / 5,512 |
| 494. | 2.69 | Louisiana R-II School District / 4,167 |
| 495. | 2.69 | Kingston 42 School District / 389 |
| 496. | 2.69 | Marionville R-IX School District / 3,995 |
| 497. | 2.68 | Reeds Spring R-IV School District / 16,801 |
| 498. | 2.68 | Roscoe C-1 School District / 611 |
| 499. | 2.68 | Keytesville R-III School District / 1,122 |
| 500. | 2.67 | Cowgill R-VI School District / 370 |
| 501. | 2.66 | Leesville R-IX School District / 1,021 |
| 502. | 2.66 | Breckenridge R-I School District / 450 |
| 503. | 2.65 | Boncl R-X School District / 451 |
| 504. | 2.65 | Holt County R-II School District / 1,841 |
| 505. | 2.65 | Higbee R-VIII School District / 1,422 |
| 506. | 2.64 | Paris R-II School District / 3,480 |
| 507. | 2.64 | Humansville R-IV School District / 3,131 |
| 508. | 2.63 | Altenburg 48 School District / 1,159 |
| 509. | 2.63 | Miller County R-III School District / 1,631 |
| 510. | 2.62 | Puxico R-VIII School District / 4,836 |
| 511. | 2.61 | Warsaw R-IX School District / 10,858 |
| 512. | 2.61 | Forsyth R-III School District / 7,496 |
| 513. | 2.59 | Hermitage R-IV School District / 2,915 |
| 514. | 2.59 | Missouri City 56 School District / 519 |
| 515. | 2.53 | Gasconade C-4 School District / 823 |
| 516. | 2.53 | Couch R-I School District / 1,110 |
| 517. | 2.52 | Orearville R-IV School District / 366 |
| 518. | 2.52 | Worth County R-III School District / 2,182 |
| 519. | 2.52 | Lesterville R-IV School District / 1,169 |
| 520. | 2.51 | Climax Springs R-IV School District / 3,368 |
| 521. | 2.49 | Shell Knob 78 School District / 2,388 |
| 522. | 2.48 | Wheatland R-II School District / 2,727 |
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.
