| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.54 | Denison Community School District / 10,354 |
| 2. | 3.54 | Storm Lake Community School District / 12,212 |
| 3. | 3.52 | Jesup Community School District / 5,895 |
| 4. | 3.47 | West Liberty Community School District / 6,333 |
| 5. | 3.45 | Earlham Community School District / 3,358 |
| 6. | 3.44 | Seymour Community School District / 2,410 |
| 7. | 3.43 | Davis County Community School District / 8,677 |
| 8. | 3.43 | West Lyon Community School District / 4,823 |
| 9. | 3.42 | Riceville Community School District / 2,655 |
| 10. | 3.41 | Sergeant Bluff-Luton Community School District / 6,278 |
| 11. | 3.39 | Perry Community School District / 10,091 |
| 12. | 3.37 | Louisa-Muscatine Community School District / 4,762 |
| 13. | 3.36 | Marshalltown Community School District / 30,396 |
| 14. | 3.35 | Rock Valley Community School District / 5,192 |
| 15. | 3.33 | Mid-Prairie Community School District / 9,096 |
| 16. | 3.32 | Carlisle Community School District / 8,924 |
| 17. | 3.30 | Dallas Center-Grimes Community School District / 10,190 |
| 18. | 3.28 | Sioux Center Community School District / 8,923 |
| 19. | 3.27 | Wapsie Valley Community School District / 3,790 |
| 20. | 3.26 | Glenwood Community School District / 11,075 |
| 21. | 3.26 | Sioux City Community School District / 83,385 |
| 22. | 3.25 | Bondurant-Farrar Community School District / 6,685 |
| 23. | 3.25 | Martensdale-St. Marys Community School District / 3,019 |
| 24. | 3.24 | South Tama County Community School District / 8,674 |
| 25. | 3.24 | Boyden-Hull Community School District / 4,358 |
| 26. | 3.24 | Keokuk Community School District / 12,931 |
| 27. | 3.24 | Des Moines Independent Community School District / 205,612 |
| 28. | 3.23 | Valley Community School District / 3,065 |
| 29. | 3.23 | Gilbert Community School District / 6,714 |
| 30. | 3.23 | Interstate 35 Community School District / 4,979 |
| 31. | 3.23 | Remsen-Union Community School District / 3,013 |
| 32. | 3.23 | Columbus Community School District / 4,667 |
| 33. | 3.22 | Glidden-Ralston Community School District / 2,080 |
| 34. | 3.21 | Danville Community School District / 2,743 |
| 35. | 3.20 | Tripoli Community School District / 2,771 |
| 36. | 3.20 | Eagle Grove Community School District / 4,693 |
| 37. | 3.19 | North Linn Community School District / 3,653 |
| 38. | 3.19 | Woodbine Community School District / 2,660 |
| 39. | 3.19 | Moulton-Udell Community School District / 1,375 |
| 40. | 3.19 | Lawton-Bronson Community School District / 3,078 |
| 41. | 3.18 | Waukee Community School District / 41,420 |
| 42. | 3.18 | Davenport Community School District / 108,996 |
| 43. | 3.18 | South O'Brien Community School District / 4,582 |
| 44. | 3.18 | North Scott Community School District / 15,673 |
| 45. | 3.18 | MOC-Floyd Valley Community School District / 11,218 |
| 46. | 3.18 | Adel-De Soto-Minburn Community School District / 8,067 |
| 47. | 3.17 | Linn-Mar Community School District / 37,068 |
| 48. | 3.17 | Van Meter Community School District / 3,282 |
| 49. | 3.17 | Woodbury Central Community School District / 2,901 |
| 50. | 3.16 | Lamoni Community School District / 3,133 |
| 51. | 3.16 | Charter Oak-Ute Community School District / 2,099 |
| 52. | 3.16 | Clarke Community School District / 8,023 |
| 53. | 3.15 | Western Dubuque Community School District / 22,060 |
| 54. | 3.15 | College Community School District / 24,875 |
| 55. | 3.15 | Fremont-Mills Community School District / 2,550 |
| 56. | 3.15 | Johnston Community School District / 34,241 |
| 57. | 3.15 | Colfax-Mingo Community School District / 4,262 |
| 58. | 3.15 | Woodward-Granger Community School District / 5,287 |
| 59. | 3.14 | Mount Vernon Community School District / 6,779 |
| 60. | 3.14 | Waterloo Community School District / 77,406 |
| 61. | 3.14 | Morning Sun Community School District / 1,362 |
| 62. | 3.14 | Mount Pleasant Community School District / 12,907 |
| 63. | 3.14 | Council Bluffs Community School District / 59,876 |
| 64. | 3.14 | Treynor Community School District / 3,013 |
| 65. | 3.13 | Bettendorf Community School District / 23,151 |
| 66. | 3.13 | Garner-Hayfield Community School District / 3,852 |
| 67. | 3.13 | Norwalk Community School District / 11,717 |
| 68. | 3.12 | Madrid Community School District / 3,512 |
| 69. | 3.12 | North Polk Community School District / 6,798 |
| 70. | 3.12 | Albia Community School District / 7,435 |
| 71. | 3.12 | Harmony Community School District / 2,823 |
| 72. | 3.12 | Southeast Polk Community School District / 33,956 |
| 73. | 3.11 | Riverside Community School District / 4,115 |
| 74. | 3.11 | Central Clinton Community School District / 9,489 |
| 75. | 3.11 | Keota Community School District / 2,064 |
| 76. | 3.11 | Pella Community School District / 15,556 |
| 77. | 3.10 | Newell-Fonda Community School District / 2,569 |
| 78. | 3.10 | Edgewood-Colesburg Community School District / 2,949 |
| 79. | 3.10 | Northeast Community School District / 2,941 |
| 80. | 3.10 | Boyer Valley Community School District / 2,740 |
| 81. | 3.10 | Eldora-New Providence Community School District / 3,765 |
| 82. | 3.10 | Akron-Westfield Community School District / 3,200 |
| 83. | 3.10 | Southeast Warren Community School District / 3,145 |
| 84. | 3.09 | Carroll Community School District / 14,060 |
| 85. | 3.09 | Lewis Central Community School District / 15,278 |
| 86. | 3.09 | Ankeny Community School District / 53,970 |
| 87. | 3.09 | Pleasantville Community School District / 3,661 |
| 88. | 3.09 | Ar-We-Va Community School District / 2,230 |
| 89. | 3.09 | Clear Creek-Amana Community School District / 12,321 |
| 90. | 3.09 | Ballard Community School District / 7,081 |
| 91. | 3.09 | BCLUW Community School District / 3,214 |
| 92. | 3.08 | Murray Community School District / 1,200 |
| 93. | 3.08 | Durant Community School District / 3,345 |
| 94. | 3.08 | Muscatine Community School District / 29,190 |
| 95. | 3.08 | Wapello Community School District / 3,582 |
| 96. | 3.08 | Calamus-Wheatland Community School District / 2,301 |
| 97. | 3.08 | Boone Community School District / 14,429 |
| 98. | 3.07 | Winfield-Mount Union Community School District / 1,651 |
| 99. | 3.07 | East Greene Community School District / 1,714 |
| 100. | 3.07 | South Hamilton Community School District / 3,602 |
| 101. | 3.06 | Pleasant Valley Community School District / 20,099 |
| 102. | 3.06 | Centerville Community School District / 8,881 |
| 103. | 3.06 | Underwood Community School District / 4,036 |
| 104. | 3.06 | Oelwein Community School District / 8,702 |
| 105. | 3.06 | Logan-Magnolia Community School District / 2,902 |
| 106. | 3.05 | Cedar Rapids Community School District / 120,797 |
| 107. | 3.05 | Mediapolis Community School District / 4,736 |
| 108. | 3.05 | Schaller-Crestland Community School District / 2,388 |
| 109. | 3.05 | Alburnett Community School District / 3,524 |
| 110. | 3.05 | Whiting Community School District / 1,328 |
| 111. | 3.05 | Hubbard-Radcliffe Community School District / 2,896 |
| 112. | 3.04 | West Des Moines Community School District / 65,738 |
| 113. | 3.04 | West Central Valley Community School District / 5,965 |
| 114. | 3.04 | Center Point-Urbana Community School District / 5,868 |
| 115. | 3.04 | Highland Community School District / 4,128 |
| 116. | 3.04 | Benton Community School District / 9,202 |
| 117. | 3.04 | Waco Community School District / 3,209 |
| 118. | 3.04 | Maquoketa Valley Community School District / 4,450 |
| 119. | 3.04 | Name N/A / 1,412 |
| 120. | 3.04 | Howard-Winneshiek Community School District / 9,042 |
| 121. | 3.03 | Oskaloosa Community School District / 15,978 |
| 122. | 3.03 | Hinton Community School District / 2,690 |
| 123. | 3.03 | Paton-Churdan Community School District / 1,112 |
| 124. | 3.03 | East Union Community School District / 3,256 |
| 125. | 3.03 | Ogden Community School District / 4,003 |
| 126. | 3.03 | Dunkerton Community School District / 2,499 |
| 127. | 3.03 | West Marshall Community School District / 4,951 |
| 128. | 3.03 | Montezuma Community School District / 3,480 |
| 129. | 3.03 | Waverly-Shell Rock Community School District / 13,825 |
| 130. | 3.03 | Clinton Community School District / 25,889 |
| 131. | 3.03 | Central Decatur Community School District / 4,215 |
| 132. | 3.03 | Springville Community School District / 2,568 |
| 133. | 3.02 | Diagonal Community School District / 662 |
| 134. | 3.02 | Fort Dodge Community School District / 28,658 |
| 135. | 3.02 | Tri-Center Community School District / 3,553 |
| 136. | 3.02 | Camanche Community School District / 5,616 |
| 137. | 3.02 | West Monona Community School District / 4,003 |
| 138. | 3.02 | Cedar Falls Community School District / 41,989 |
| 139. | 3.02 | Malvern Community School District / 3,384 |
| 140. | 3.02 | Central City Community School District / 2,998 |
| 141. | 3.01 | Creston Community School District / 9,674 |
| 142. | 3.01 | Union Community School District / 6,347 |
| 143. | 3.01 | Postville Community School District / 3,489 |
| 144. | 3.01 | Indianola Community School District / 20,037 |
| 145. | 3.01 | Iowa City Community School District / 110,675 |
| 146. | 3.01 | Knoxville Community School District / 11,702 |
| 147. | 3.01 | Vinton-Shellsburg Community School District / 10,383 |
| 148. | 3.01 | Eddyville-Blakesburg Community School District / 5,108 |
| 149. | 3.01 | Clarion-Goldfield Community School District / 4,653 |
| 150. | 3.01 | Belmond-Klemme Community School District / 4,389 |
| 151. | 3.00 | Iowa Falls Community School District / 7,064 |
| 152. | 3.00 | Tri-County Community School District / 1,682 |
| 153. | 3.00 | Central Lee Community School District / 5,129 |
| 154. | 3.00 | Roland-Story Community School District / 5,841 |
| 155. | 3.00 | West Central Community School District / 1,871 |
| 155. | 3.00 | Lu Verne Community School District / 506 |
| 157. | 3.00 | Colo-Nesco Community School District / 3,044 |
| 158. | 3.00 | Pekin Community School District / 3,690 |
| 159. | 3.00 | West Bend-Mallard Community School District / 2,108 |
| 160. | 3.00 | Ottumwa Community School District / 28,949 |
| 161. | 2.99 | Lisbon Community School District / 2,816 |
| 162. | 2.99 | Mormon Trail Community School District / 1,675 |
| 163. | 2.99 | Harlan Community School District / 8,844 |
| 164. | 2.99 | Burlington Community School District / 30,070 |
| 165. | 2.99 | Winterset Community School District / 8,821 |
| 166. | 2.99 | Fort Madison Community School District / 17,216 |
| 167. | 2.98 | Dubuque Community School District / 76,893 |
| 168. | 2.98 | Southeast Webster-Grand Community School District / 3,156 |
| 169. | 2.98 | Algona Community School District / 9,417 |
| 170. | 2.98 | Belle Plaine Community School District / 3,236 |
| 171. | 2.98 | Rudd-Rockford-Marble Rock Community School District / 2,956 |
| 172. | 2.98 | Northeast Hamilton Community School District / 1,390 |
| 173. | 2.98 | Le Mars Community School District / 13,419 |
| 174. | 2.98 | Lynnville-Sully Community School District / 3,164 |
| 175. | 2.98 | West Burlington Independent School District / 2,839 |
| 176. | 2.98 | George-Little Rock Community School District / 2,698 |
| 177. | 2.97 | Solon Community School District / 6,638 |
| 178. | 2.97 | Mount Ayr Community School District / 4,141 |
| 179. | 2.97 | Grundy Center Community School District / 3,725 |
| 180. | 2.96 | Guthrie Center Community School District / 2,625 |
| 181. | 2.96 | Van Buren Community School District / 5,065 |
| 182. | 2.96 | North Mahaska Community School District / 2,811 |
| 183. | 2.95 | Griswold Community School District / 3,404 |
| 184. | 2.95 | North Fayette Community School District / 6,122 |
| 185. | 2.95 | Clarksville Community School District / 2,094 |
| 186. | 2.95 | Maple Valley Community School District / 4,404 |
| 187. | 2.95 | North Winneshiek Community School District / 2,037 |
| 188. | 2.95 | Baxter Community School District / 1,717 |
| 189. | 2.95 | North Tama County Community School District / 3,086 |
| 190. | 2.95 | Osage Community School District / 5,969 |
| 191. | 2.95 | Kingsley-Pierson Community School District / 2,646 |
| 192. | 2.95 | West Hancock Community School District / 4,119 |
| 193. | 2.95 | Twin Cedars Community School District / 2,548 |
| 194. | 2.95 | A-H-S-T Community School District / 3,146 |
| 195. | 2.95 | River Valley Community School District / 2,583 |
| 196. | 2.95 | Hudson Community School District / 3,327 |
| 197. | 2.95 | Newton Community School District / 21,242 |
| 198. | 2.95 | Odebolt-Arthur Community School District / 2,227 |
| 199. | 2.94 | Wayne Community School District / 3,819 |
| 200. | 2.94 | South Page Community School District / 1,510 |
| 201. | 2.94 | Dike-New Hartford Community School District / 4,498 |
| 202. | 2.94 | Webster City Community School District / 9,959 |
| 203. | 2.94 | Janesville Consolidated School District / 2,455 |
| 204. | 2.94 | Cardinal Community School District / 4,014 |
| 205. | 2.94 | Urbandale Community School District / 20,873 |
| 206. | 2.94 | Nevada Community School District / 8,919 |
| 207. | 2.93 | Clarinda Community School District / 7,277 |
| 208. | 2.93 | West Sioux Community School District / 3,988 |
| 209. | 2.93 | Twin Rivers Community School District / 1,193 |
| 210. | 2.93 | Clay Central-Everly Community School District / 2,322 |
| 211. | 2.93 | Stratford Community School District / 1,209 |
| 212. | 2.92 | Saydel Community School District / 8,103 |
| 213. | 2.92 | Coon Rapids-Bayard Community School District / 2,822 |
| 214. | 2.92 | Marcus-Meriden-Cleghorn Community School District / 2,921 |
| 215. | 2.92 | Williamsburg Community School District / 6,496 |
| 216. | 2.92 | Manson Northwest Webster Community School District / 4,280 |
| 217. | 2.92 | New London Community School District / 2,987 |
| 218. | 2.92 | Shenandoah Community School District / 6,133 |
| 219. | 2.92 | Chariton Community School District / 8,330 |
| 220. | 2.92 | Moravia Community School District / 2,300 |
| 221. | 2.91 | H-L-V Community School District / 2,207 |
| 222. | 2.91 | Bellevue Community School District / 4,704 |
| 223. | 2.91 | Prairie Valley Community School District / 4,144 |
| 224. | 2.91 | Fairfield Community School District / 15,659 |
| 225. | 2.91 | Marion Independent School District / 12,255 |
| 226. | 2.91 | Washington Community School District / 10,221 |
| 227. | 2.90 | Grinnell-Newburg Community School District / 12,345 |
| 228. | 2.90 | C and M Community School District / 2,951 |
| 229. | 2.90 | Laurens-Marathon Community School District / 2,182 |
| 230. | 2.90 | New Hampton Community School District / 7,238 |
| 231. | 2.90 | Nodaway Valley Community School District / 4,119 |
| 232. | 2.90 | Alta Community School District / 2,893 |
| 233. | 2.90 | Delwood Community School District / 1,123 |
| 234. | 2.90 | Mason City Community School District / 28,622 |
| 235. | 2.89 | Cal Community School District / 1,713 |
| 236. | 2.89 | Iowa Valley Community School District / 3,512 |
| 237. | 2.89 | Hampton-Dumont Community School District / 6,739 |
| 238. | 2.89 | Tipton Community School District / 4,999 |
| 239. | 2.88 | Wilton Community School District / 4,251 |
| 240. | 2.88 | Sigourney Community School District / 3,751 |
| 241. | 2.88 | GMG Community School District / 1,782 |
| 242. | 2.88 | West Branch Community School District / 4,319 |
| 243. | 2.88 | Jefferson-Scranton Community School District / 6,062 |
| 244. | 2.88 | North Cedar Community School District / 5,101 |
| 245. | 2.88 | West Delaware County Community School District / 9,003 |
| 246. | 2.88 | AGWSR Community School District / 4,849 |
| 247. | 2.88 | IKM Community School District / 4,641 |
| 248. | 2.87 | East Marshall Community School District / 4,093 |
| 249. | 2.87 | PCM Community School District / 5,314 |
| 250. | 2.87 | Gladbrook-Reinbeck Community School District / 4,417 |
| 251. | 2.87 | Westwood Community School District / 3,153 |
| 252. | 2.87 | Hamburg Community School District / 1,478 |
| 253. | 2.87 | Emmetsburg Community School District / 4,971 |
| 254. | 2.87 | Central Lyon Community School District / 4,018 |
| 255. | 2.86 | Sibley-Ocheyedan Community School District / 4,603 |
| 256. | 2.86 | Starmont Community School District / 3,814 |
| 257. | 2.86 | Missouri Valley Community School District / 5,140 |
| 258. | 2.86 | Sheffield Chapin Meservey Thornton Community School District / 4,716 |
| 259. | 2.86 | Hartley-Melvin-Sanborn Community School District / 4,250 |
| 260. | 2.86 | Collins-Maxwell Community School District / 2,689 |
| 261. | 2.85 | Denver Community School District / 3,847 |
| 262. | 2.85 | North Central Community School District / 5,594 |
| 263. | 2.85 | Harris-Lake Park Community School District / 1,717 |
| 264. | 2.85 | Decorah Community School District / 11,789 |
| 265. | 2.85 | Eastern Allamakee Community School District / 2,710 |
| 266. | 2.85 | Sumner Community School District / 3,448 |
| 267. | 2.84 | Spencer Community School District / 12,952 |
| 268. | 2.84 | Charles City Community School District / 11,219 |
| 269. | 2.84 | North Kossuth Community School District / 2,237 |
| 270. | 2.84 | Corwith-Wesley Community School District / 921 |
| 271. | 2.84 | Allamakee Community School District / 8,539 |
| 272. | 2.84 | East Buchanan Community School District / 2,905 |
| 273. | 2.84 | Humboldt Community School District / 7,467 |
| 274. | 2.84 | Turkey Valley Community School District / 2,954 |
| 275. | 2.84 | Estherville Lincoln Central Community School District / 7,995 |
| 276. | 2.84 | Nashua-Plainfield Community School District / 3,878 |
| 277. | 2.83 | Olin Consolidated School District / 1,480 |
| 278. | 2.83 | Anamosa Community School District / 9,287 |
| 279. | 2.83 | Allison-Bristow Community School District / 4,070 |
| 280. | 2.83 | Lake Mills Community School District / 3,576 |
| 281. | 2.83 | East Central Community School District / 4,005 |
| 282. | 2.83 | Pocahontas Area Community School District / 5,262 |
| 283. | 2.82 | Walnut Community School District / 1,219 |
| 284. | 2.82 | Gilmore City-Bradgate Community School District / 1,012 |
| 285. | 2.82 | Exira Community School District / 1,825 |
| 286. | 2.82 | Lone Tree Community School District / 2,278 |
| 287. | 2.82 | Wall Lake View Auburn Community School District / 5,728 |
| 288. | 2.82 | Independence Community School District / 9,001 |
| 289. | 2.82 | Sidney Community School District / 1,811 |
| 290. | 2.81 | Ames Community School District / 58,297 |
| 291. | 2.81 | Panorama Community School District / 4,575 |
| 292. | 2.81 | Sheldon Community School District / 7,292 |
| 293. | 2.81 | Aplington-Parkersburg Community School District / 4,304 |
| 294. | 2.80 | United Community School District / 2,145 |
| 295. | 2.80 | Clearfield Community School District / 688 |
| 296. | 2.80 | Schleswig Community School District / 1,630 |
| 297. | 2.80 | Monticello Community School District / 6,621 |
| 298. | 2.80 | Northwood-Kensett Community School District / 3,314 |
| 299. | 2.80 | Adair-Casey Community School District / 1,914 |
| 300. | 2.80 | Bedford Community School District / 3,075 |
| 301. | 2.79 | Red Oak Community School District / 6,975 |
| 302. | 2.79 | Graettinger Community School District / 2,201 |
| 303. | 2.79 | St. Ansgar Community School District / 4,065 |
| 304. | 2.79 | Clear Lake Community School District / 8,752 |
| 305. | 2.79 | Elk Horn-Kimballton Community School District / 1,467 |
| 306. | 2.79 | Maquoketa Community School District / 8,888 |
| 307. | 2.78 | West Harrison Community School District / 2,638 |
| 308. | 2.78 | South Winneshiek Community School District / 4,523 |
| 309. | 2.77 | Melcher-Dallas Community School District / 1,674 |
| 310. | 2.77 | Fredericksburg Community School District / 1,824 |
| 311. | 2.77 | Midland Community School District / 3,620 |
| 312. | 2.77 | Forest City Community School District / 7,723 |
| 313. | 2.77 | Southern Cal Community School District / 2,962 |
| 314. | 2.76 | Sentral Community School District / 1,028 |
| 315. | 2.76 | Battle Creek-Ida Grove Community School District / 3,937 |
| 316. | 2.76 | Bennett Community School District / 1,138 |
| 317. | 2.76 | Andrew Community School District / 1,551 |
| 318. | 2.75 | Name N/A / 1,521 |
| 319. | 2.74 | Armstrong-Ringsted Community School District / 2,149 |
| 320. | 2.74 | Central Community School District / 3,329 |
| 321. | 2.74 | Ruthven-Ayrshire Community School District / 1,409 |
| 322. | 2.73 | English Valleys Community School District / 2,890 |
| 323. | 2.73 | Clayton Ridge Community School District / 5,044 |
| 324. | 2.72 | Brooklyn-Guernsey-Malcom Community School District / 3,173 |
| 325. | 2.72 | Galva-Holstein Community School District / 2,573 |
| 326. | 2.72 | MFL MarMac Community School District / 5,471 |
| 327. | 2.71 | Atlantic Community School District / 8,459 |
| 328. | 2.70 | Stanton Community School District / 1,214 |
| 329. | 2.70 | Sioux Central Community School District / 2,581 |
| 330. | 2.70 | Farragut Community School District / 1,483 |
| 331. | 2.70 | North Iowa Community School District / 3,147 |
| 332. | 2.70 | Essex Community School District / 1,445 |
| 333. | 2.69 | Aurelia Community School District / 1,646 |
| 334. | 2.69 | Rockwell City-Lytton Community School District / 3,246 |
| 335. | 2.66 | Villisca Community School District / 2,189 |
| 336. | 2.65 | Cherokee Community School District / 6,432 |
| 337. | 2.65 | Prescott Community School District / 645 |
| 338. | 2.64 | Corning Community School District / 2,814 |
| 339. | 2.63 | Audubon Community School District / 3,382 |
| 340. | 2.62 | Lenox Community School District / 2,032 |
| 341. | 2.61 | Okoboji Community School District / 6,700 |
| 342. | 2.61 | Orient-Macksburg Community School District / 1,209 |
| 343. | 2.61 | Dows Community School District / 801 |
| 344. | 2.60 | Spirit Lake Community School District / 8,022 |
| 345. | 2.50 | Titonka Consolidated School District / 897 |
| 346. | 2.45 | Ventura Community School District / 1,683 |
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.
