| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.55 | Winfield-Mount Union Community School District / 2,229 |
| 2. | 3.42 | Davis County Community School District / 8,468 |
| 3. | 3.40 | Storm Lake Community School District / 11,960 |
| 4. | 3.38 | Van Meter Community School District / 3,048 |
| 5. | 3.37 | Sioux Center Community School District / 8,910 |
| 6. | 3.37 | Seymour Community School District / 2,521 |
| 7. | 3.37 | Lone Tree Community School District / 2,954 |
| 8. | 3.37 | Dallas Center-Grimes Community School District / 9,890 |
| 9. | 3.37 | Columbus Community School District / 4,394 |
| 10. | 3.36 | Denison Community School District / 10,321 |
| 11. | 3.35 | Boyden-Hull Community School District / 4,106 |
| 12. | 3.34 | Rock Valley Community School District / 4,755 |
| 13. | 3.34 | Earlham Community School District / 3,305 |
| 14. | 3.33 | West Lyon Community School District / 4,374 |
| 15. | 3.32 | Lamoni Community School District / 2,835 |
| 16. | 3.30 | Riceville Community School District / 2,749 |
| 17. | 3.30 | Wapello Community School District / 3,849 |
| 18. | 3.29 | West Liberty Community School District / 6,222 |
| 19. | 3.28 | Murray Community School District / 1,482 |
| 20. | 3.28 | Cardinal Community School District / 4,743 |
| 21. | 3.27 | Mid-Prairie Community School District / 9,399 |
| 22. | 3.27 | Marshalltown Community School District / 30,335 |
| 23. | 3.26 | Cal Community School District / 1,724 |
| 24. | 3.24 | Morning Sun Community School District / 1,642 |
| 25. | 3.23 | Norwalk Community School District / 10,626 |
| 26. | 3.23 | Fremont-Mills Community School District / 2,815 |
| 27. | 3.22 | Clarke Community School District / 7,975 |
| 28. | 3.22 | Diagonal Community School District / 640 |
| 29. | 3.22 | Adair-Casey Community School District / 2,210 |
| 30. | 3.21 | Mount Pleasant Community School District / 12,837 |
| 31. | 3.21 | Ballard Community School District / 7,106 |
| 32. | 3.21 | Adel-De Soto-Minburn Community School District / 7,457 |
| 33. | 3.21 | Woodward-Granger Community School District / 5,097 |
| 34. | 3.21 | Sioux City Community School District / 82,522 |
| 35. | 3.19 | Edgewood-Colesburg Community School District / 2,945 |
| 36. | 3.18 | South Hamilton Community School District / 3,804 |
| 37. | 3.18 | Louisa-Muscatine Community School District / 4,644 |
| 38. | 3.18 | Wilton Community School District / 4,321 |
| 39. | 3.17 | Graettinger Community School District / 1,480 |
| 40. | 3.17 | MOC-Floyd Valley Community School District / 10,720 |
| 41. | 3.16 | Sergeant Bluff-Luton Community School District / 5,921 |
| 42. | 3.16 | North Polk Community School District / 6,046 |
| 43. | 3.15 | Wapsie Valley Community School District / 3,671 |
| 44. | 3.15 | Logan-Magnolia Community School District / 3,332 |
| 45. | 3.15 | Chariton Community School District / 7,666 |
| 46. | 3.15 | Dike-New Hartford Community School District / 4,570 |
| 47. | 3.14 | Winterset Community School District / 8,960 |
| 48. | 3.14 | Colfax-Mingo Community School District / 5,134 |
| 49. | 3.14 | Ankeny Community School District / 46,304 |
| 50. | 3.13 | Pella Community School District / 15,598 |
| 51. | 3.13 | Linn-Mar Community School District / 34,836 |
| 52. | 3.13 | Waukee Community School District / 32,882 |
| 53. | 3.13 | Des Moines Independent Community School District / 202,816 |
| 54. | 3.13 | Glenwood Community School District / 11,095 |
| 55. | 3.13 | Martensdale-St. Marys Community School District / 2,672 |
| 56. | 3.13 | Clarion-Goldfield Community School District / 5,091 |
| 57. | 3.13 | West Sioux Community School District / 4,455 |
| 58. | 3.12 | Aurelia Community School District / 1,907 |
| 59. | 3.12 | Keokuk Community School District / 13,261 |
| 60. | 3.12 | North Linn Community School District / 3,579 |
| 61. | 3.12 | South Tama County Community School District / 8,840 |
| 62. | 3.12 | Western Dubuque Community School District / 21,123 |
| 63. | 3.12 | North Scott Community School District / 14,717 |
| 64. | 3.12 | Camanche Community School District / 5,419 |
| 65. | 3.11 | BCLUW Community School District / 3,462 |
| 66. | 3.11 | Fort Dodge Community School District / 30,009 |
| 67. | 3.11 | Bondurant-Farrar Community School District / 5,772 |
| 68. | 3.11 | Southeast Polk Community School District / 30,372 |
| 69. | 3.11 | Pleasantville Community School District / 3,464 |
| 70. | 3.10 | Carlisle Community School District / 7,808 |
| 71. | 3.10 | Johnston Community School District / 28,700 |
| 72. | 3.10 | College Community School District / 22,806 |
| 73. | 3.10 | Washington Community School District / 10,011 |
| 74. | 3.10 | Muscatine Community School District / 28,877 |
| 75. | 3.09 | Benton Community School District / 9,232 |
| 76. | 3.09 | Woodbury Central Community School District / 2,836 |
| 77. | 3.09 | Perry Community School District / 9,211 |
| 78. | 3.09 | Mount Vernon Community School District / 5,905 |
| 79. | 3.09 | New London Community School District / 2,964 |
| 80. | 3.08 | Center Point-Urbana Community School District / 5,870 |
| 81. | 3.08 | Dunkerton Community School District / 2,498 |
| 82. | 3.08 | Springville Community School District / 2,550 |
| 83. | 3.08 | Akron-Westfield Community School District / 3,466 |
| 84. | 3.08 | Valley Community School District / 2,722 |
| 85. | 3.08 | Walnut Community School District / 1,288 |
| 86. | 3.08 | Northeast Hamilton Community School District / 1,557 |
| 87. | 3.08 | Rudd-Rockford-Marble Rock Community School District / 3,104 |
| 88. | 3.08 | Interstate 35 Community School District / 4,574 |
| 89. | 3.08 | Moulton-Udell Community School District / 1,648 |
| 90. | 3.08 | Remsen-Union Community School District / 3,131 |
| 91. | 3.07 | Davenport Community School District / 105,189 |
| 92. | 3.07 | West Marshall Community School District / 4,347 |
| 93. | 3.07 | Alburnett Community School District / 3,463 |
| 94. | 3.07 | Lenox Community School District / 1,857 |
| 95. | 3.07 | Elk Horn-Kimballton Community School District / 1,522 |
| 96. | 3.07 | Kingsley-Pierson Community School District / 2,697 |
| 97. | 3.06 | Clinton Community School District / 26,447 |
| 98. | 3.06 | Waco Community School District / 2,958 |
| 99. | 3.06 | Council Bluffs Community School District / 59,123 |
| 100. | 3.06 | Le Mars Community School District / 13,057 |
| 101. | 3.06 | Sheldon Community School District / 6,897 |
| 102. | 3.06 | Roland-Story Community School District / 5,945 |
| 103. | 3.06 | Hubbard-Radcliffe Community School District / 2,705 |
| 104. | 3.05 | Baxter Community School District / 1,929 |
| 105. | 3.05 | Centerville Community School District / 9,042 |
| 106. | 3.05 | Central Clinton Community School District / 9,472 |
| 107. | 3.05 | Lewis Central Community School District / 14,945 |
| 108. | 3.05 | Mediapolis Community School District / 5,348 |
| 109. | 3.05 | Mount Ayr Community School District / 4,309 |
| 110. | 3.04 | Westwood Community School District / 2,872 |
| 111. | 3.04 | Union Community School District / 6,584 |
| 112. | 3.04 | North Kossuth Community School District / 2,193 |
| 113. | 3.04 | Boone Community School District / 14,492 |
| 114. | 3.04 | Postville Community School District / 3,717 |
| 115. | 3.04 | Oelwein Community School District / 9,451 |
| 116. | 3.04 | GMG Community School District / 1,889 |
| 117. | 3.04 | Tipton Community School District / 5,302 |
| 118. | 3.04 | Bettendorf Community School District / 21,648 |
| 119. | 3.03 | Sheffield Chapin Meservey Thornton Community School District / 3,025 |
| 120. | 3.03 | Hartley-Melvin-Sanborn Community School District / 4,443 |
| 121. | 3.03 | West Central Community School District / 1,835 |
| 122. | 3.03 | Sibley-Ocheyedan Community School District / 4,882 |
| 123. | 3.03 | Schaller-Crestland Community School District / 2,110 |
| 124. | 3.03 | Lisbon Community School District / 2,903 |
| 125. | 3.03 | Central Lyon Community School District / 4,250 |
| 126. | 3.03 | Eagle Grove Community School District / 4,782 |
| 127. | 3.03 | Alden Community School District / 1,705 |
| 128. | 3.03 | Indianola Community School District / 19,148 |
| 129. | 3.03 | Durant Community School District / 3,280 |
| 130. | 3.03 | Pleasant Valley Community School District / 19,928 |
| 131. | 3.02 | Charles City Community School District / 11,277 |
| 132. | 3.02 | Melcher-Dallas Community School District / 2,028 |
| 133. | 3.02 | Preston Community School District / 1,875 |
| 134. | 3.02 | Urbandale Community School District / 20,814 |
| 135. | 3.02 | St. Ansgar Community School District / 4,081 |
| 136. | 3.02 | West Burlington Independent School District / 2,880 |
| 137. | 3.02 | Calamus-Wheatland Community School District / 2,484 |
| 138. | 3.02 | Jesup Community School District / 4,684 |
| 139. | 3.01 | Pekin Community School District / 3,760 |
| 140. | 3.01 | Lawton-Bronson Community School District / 3,246 |
| 141. | 3.01 | Bedford Community School District / 2,877 |
| 142. | 3.01 | Hampton-Dumont Community School District / 7,055 |
| 143. | 3.01 | Starmont Community School District / 3,988 |
| 144. | 3.01 | Hinton Community School District / 2,697 |
| 145. | 3.00 | Knoxville Community School District / 11,532 |
| 146. | 3.00 | Clarksville Community School District / 2,279 |
| 147. | 3.00 | West Branch Community School District / 4,223 |
| 148. | 3.00 | Harmony Community School District / 2,704 |
| 149. | 3.00 | Anthon-Oto Community School District / 1,588 |
| 150. | 3.00 | Treynor Community School District / 2,814 |
| 151. | 3.00 | Griswold Community School District / 3,529 |
| 151. | 3.00 | Laurens-Marathon Community School District / 2,295 |
| 151. | 3.00 | Malvern Community School District / 2,029 |
| 154. | 3.00 | IKM Community School District / 2,495 |
| 155. | 3.00 | Collins-Maxwell Community School District / 2,745 |
| 156. | 3.00 | Lynnville-Sully Community School District / 3,134 |
| 157. | 2.99 | Waterloo Community School District / 77,311 |
| 158. | 2.99 | Osage Community School District / 5,907 |
| 159. | 2.99 | New Hampton Community School District / 7,563 |
| 160. | 2.99 | West Des Moines Community School District / 62,978 |
| 161. | 2.99 | Farragut Community School District / 1,699 |
| 162. | 2.98 | Cedar Rapids Community School District / 119,132 |
| 163. | 2.98 | River Valley Community School District / 2,759 |
| 164. | 2.98 | Maquoketa Valley Community School District / 4,516 |
| 165. | 2.98 | Ogden Community School District / 4,145 |
| 166. | 2.98 | Gilbert Community School District / 6,065 |
| 167. | 2.98 | North Mahaska Community School District / 2,951 |
| 168. | 2.98 | Madrid Community School District / 3,416 |
| 169. | 2.97 | Tri-Center Community School District / 3,569 |
| 170. | 2.97 | Underwood Community School District / 3,721 |
| 171. | 2.97 | Villisca Community School District / 2,446 |
| 172. | 2.97 | Harlan Community School District / 9,042 |
| 173. | 2.97 | West Delaware County Community School District / 9,382 |
| 174. | 2.96 | Whiting Community School District / 1,028 |
| 175. | 2.96 | North Central Community School District / 3,176 |
| 176. | 2.96 | Alta Community School District / 2,899 |
| 177. | 2.96 | Montezuma Community School District / 3,616 |
| 178. | 2.96 | Iowa City Community School District / 103,013 |
| 179. | 2.96 | Corning Community School District / 3,140 |
| 180. | 2.96 | Fairfield Community School District / 15,124 |
| 181. | 2.96 | Twin Rivers Community School District / 1,264 |
| 182. | 2.95 | Odebolt-Arthur Community School District / 2,236 |
| 183. | 2.95 | Ottumwa Community School District / 28,801 |
| 184. | 2.95 | Russell Community School District / 958 |
| 185. | 2.95 | Red Oak Community School District / 7,243 |
| 186. | 2.95 | Stanton Community School District / 1,119 |
| 187. | 2.95 | Carroll Community School District / 14,260 |
| 188. | 2.95 | Hudson Community School District / 3,519 |
| 189. | 2.95 | Williamsburg Community School District / 6,177 |
| 190. | 2.95 | Solon Community School District / 5,884 |
| 191. | 2.94 | Riverside Community School District / 3,769 |
| 192. | 2.94 | East Greene Community School District / 1,765 |
| 193. | 2.94 | Burlington Community School District / 29,454 |
| 194. | 2.94 | Central Community School District / 3,730 |
| 195. | 2.94 | South Winneshiek Community School District / 4,441 |
| 196. | 2.94 | Sioux Central Community School District / 2,686 |
| 197. | 2.94 | Greene Community School District / 2,165 |
| 198. | 2.94 | Dows Community School District / 1,050 |
| 199. | 2.94 | Tripoli Community School District / 2,649 |
| 200. | 2.93 | Dubuque Community School District / 74,935 |
| 201. | 2.93 | AGWSR Community School District / 4,360 |
| 202. | 2.93 | Northeast Community School District / 2,774 |
| 203. | 2.93 | Anamosa Community School District / 9,405 |
| 204. | 2.93 | Van Buren Community School District / 5,222 |
| 205. | 2.93 | Nishna Valley Community School District / 1,463 |
| 206. | 2.93 | Clear Creek-Amana Community School District / 11,173 |
| 207. | 2.93 | Belle Plaine Community School District / 3,384 |
| 208. | 2.93 | Decorah Community School District / 11,827 |
| 209. | 2.93 | Rockwell-Swaledale Community School District / 2,020 |
| 210. | 2.93 | East Buchanan Community School District / 2,950 |
| 211. | 2.93 | Waverly-Shell Rock Community School District / 13,371 |
| 212. | 2.93 | Denver Community School District / 3,803 |
| 213. | 2.92 | Ruthven-Ayrshire Community School District / 1,609 |
| 214. | 2.92 | Algona Community School District / 9,393 |
| 215. | 2.92 | North Tama County Community School District / 2,963 |
| 216. | 2.92 | South O'Brien Community School District / 4,872 |
| 217. | 2.92 | Marion Independent School District / 11,774 |
| 218. | 2.92 | Manning Community School District / 2,414 |
| 219. | 2.92 | West Bend-Mallard Community School District / 1,958 |
| 220. | 2.92 | Andrew Community School District / 1,639 |
| 221. | 2.92 | Oskaloosa Community School District / 15,690 |
| 222. | 2.92 | Missouri Valley Community School District / 5,091 |
| 223. | 2.92 | Maple Valley Community School District / 2,951 |
| 224. | 2.92 | Garner-Hayfield Community School District / 3,973 |
| 225. | 2.92 | Ar-We-Va Community School District / 2,120 |
| 225. | 2.92 | Bennett Community School District / 1,277 |
| 227. | 2.92 | North Cedar Community School District / 5,206 |
| 228. | 2.92 | Allamakee Community School District / 9,033 |
| 229. | 2.91 | Webster City Community School District / 10,032 |
| 230. | 2.91 | Howard-Winneshiek Community School District / 8,921 |
| 231. | 2.91 | Danville Community School District / 2,591 |
| 232. | 2.91 | Paton-Churdan Community School District / 1,165 |
| 233. | 2.91 | Bellevue Community School District / 4,643 |
| 234. | 2.91 | Stratford Community School District / 1,290 |
| 235. | 2.91 | Keota Community School District / 2,175 |
| 236. | 2.91 | Saydel Community School District / 8,356 |
| 237. | 2.91 | Vinton-Shellsburg Community School District / 10,546 |
| 238. | 2.91 | Belmond-Klemme Community School District / 4,493 |
| 239. | 2.91 | Lineville-Clio Community School District / 609 |
| 240. | 2.91 | Midland Community School District / 3,911 |
| 241. | 2.91 | Guthrie Center Community School District / 2,627 |
| 242. | 2.91 | Central City Community School District / 2,882 |
| 243. | 2.90 | Iowa Valley Community School District / 3,379 |
| 244. | 2.90 | Highland Community School District / 3,543 |
| 245. | 2.90 | Sidney Community School District / 1,666 |
| 246. | 2.90 | Schleswig Community School District / 1,726 |
| 247. | 2.90 | East Marshall Community School District / 3,787 |
| 248. | 2.90 | Maquoketa Community School District / 9,196 |
| 249. | 2.90 | Cherokee Community School District / 6,347 |
| 250. | 2.89 | Newell-Fonda Community School District / 2,341 |
| 251. | 2.89 | Ames Community School District / 55,030 |
| 252. | 2.89 | Independence Community School District / 9,560 |
| 253. | 2.89 | Panorama Community School District / 4,858 |
| 254. | 2.89 | Delwood Community School District / 1,269 |
| 255. | 2.89 | Eastern Allamakee Community School District / 2,542 |
| 256. | 2.89 | Twin Cedars Community School District / 2,445 |
| 257. | 2.89 | West Central Valley Community School District / 5,772 |
| 258. | 2.88 | Colo-Nesco Community School District / 3,209 |
| 259. | 2.88 | Fremont Community School District / 1,129 |
| 260. | 2.88 | Tri-County Community School District / 1,886 |
| 261. | 2.88 | Gladbrook-Reinbeck Community School District / 4,780 |
| 262. | 2.88 | West Harrison Community School District / 2,989 |
| 263. | 2.88 | Jefferson-Scranton Community School District / 6,408 |
| 264. | 2.88 | Marcus-Meriden-Cleghorn Community School District / 2,798 |
| 265. | 2.88 | Lake Mills Community School District / 4,087 |
| 266. | 2.88 | Battle Creek-Ida Grove Community School District / 4,107 |
| 267. | 2.87 | Mason City Community School District / 29,225 |
| 268. | 2.87 | Aplington-Parkersburg Community School District / 4,162 |
| 269. | 2.87 | Humboldt Community School District / 7,479 |
| 270. | 2.87 | New Market Community School District / 1,146 |
| 271. | 2.87 | Nevada Community School District / 8,165 |
| 272. | 2.86 | Estherville Lincoln Central Community School District / 8,148 |
| 273. | 2.86 | Creston Community School District / 9,311 |
| 274. | 2.86 | Clay Central-Everly Community School District / 2,377 |
| 275. | 2.86 | Central Lee Community School District / 5,247 |
| 276. | 2.86 | Cedar Falls Community School District / 39,480 |
| 277. | 2.86 | Audubon Community School District / 3,566 |
| 278. | 2.85 | Nashua-Plainfield Community School District / 4,026 |
| 279. | 2.85 | Fort Madison Community School District / 17,198 |
| 280. | 2.85 | MFL MarMac Community School District / 5,721 |
| 281. | 2.85 | H-L-V Community School District / 1,957 |
| 282. | 2.85 | North Winneshiek Community School District / 1,943 |
| 283. | 2.85 | Sac Community School District / 2,754 |
| 284. | 2.85 | Moravia Community School District / 2,177 |
| 285. | 2.85 | Corwith-Wesley Community School District / 1,119 |
| 286. | 2.85 | East Union Community School District / 3,300 |
| 287. | 2.85 | Eddyville-Blakesburg Community School District / 3,922 |
| 288. | 2.85 | Rockwell City-Lytton Community School District / 3,489 |
| 289. | 2.84 | Emmetsburg Community School District / 5,002 |
| 290. | 2.84 | Monticello Community School District / 6,594 |
| 291. | 2.84 | Grundy Center Community School District / 3,694 |
| 292. | 2.84 | Iowa Falls Community School District / 6,964 |
| 293. | 2.84 | Allison-Bristow Community School District / 1,840 |
| 294. | 2.84 | Harris-Lake Park Community School District / 1,931 |
| 295. | 2.84 | Mormon Trail Community School District / 1,721 |
| 296. | 2.83 | Sentral Community School District / 1,103 |
| 297. | 2.83 | Albia Community School District / 7,362 |
| 298. | 2.83 | George-Little Rock Community School District / 2,774 |
| 299. | 2.83 | Nodaway Valley Community School District / 4,425 |
| 300. | 2.82 | Charter Oak-Ute Community School District / 1,766 |
| 301. | 2.82 | Woodbine Community School District / 2,528 |
| 302. | 2.82 | Pocahontas Area Community School District / 3,611 |
| 303. | 2.82 | Clayton Ridge Community School District / 4,896 |
| 304. | 2.82 | Wall Lake View Auburn Community School District / 3,367 |
| 305. | 2.82 | Armstrong-Ringsted Community School District / 2,375 |
| 306. | 2.82 | North Iowa Community School District / 3,332 |
| 307. | 2.81 | Prescott Community School District / 582 |
| 308. | 2.81 | Forest City Community School District / 6,622 |
| 309. | 2.81 | East Central Community School District / 2,163 |
| 310. | 2.81 | Atlantic Community School District / 8,550 |
| 311. | 2.81 | Olin Consolidated School District / 1,443 |
| 312. | 2.81 | C and M Community School District / 1,329 |
| 313. | 2.81 | Central Decatur Community School District / 4,493 |
| 314. | 2.81 | English Valleys Community School District / 2,946 |
| 315. | 2.80 | Coon Rapids-Bayard Community School District / 2,508 |
| 316. | 2.80 | Essex Community School District / 1,478 |
| 317. | 2.80 | Galva-Holstein Community School District / 2,733 |
| 318. | 2.80 | Southeast Warren Community School District / 3,043 |
| 319. | 2.80 | Hamburg Community School District / 1,686 |
| 320. | 2.79 | Titonka Consolidated School District / 983 |
| 321. | 2.79 | Boyer Valley Community School District / 2,622 |
| 322. | 2.79 | Southeast Webster-Grand Community School District / 3,547 |
| 323. | 2.78 | Sumner Community School District / 3,065 |
| 324. | 2.78 | Prairie Valley Community School District / 3,719 |
| 325. | 2.78 | Grinnell-Newburg Community School District / 12,284 |
| 326. | 2.78 | North Fayette Community School District / 6,143 |
| 327. | 2.78 | Clear Lake Community School District / 8,681 |
| 328. | 2.78 | Janesville Consolidated School District / 2,500 |
| 329. | 2.78 | Spencer Community School District / 12,119 |
| 330. | 2.77 | Brooklyn-Guernsey-Malcom Community School District / 3,273 |
| 331. | 2.77 | Exira Community School District / 1,705 |
| 332. | 2.77 | Glidden-Ralston Community School District / 1,894 |
| 333. | 2.77 | Sigourney Community School District / 3,538 |
| 334. | 2.77 | Wayne Community School District / 3,282 |
| 335. | 2.76 | Turkey Valley Community School District / 3,003 |
| 336. | 2.76 | West Hancock Community School District / 3,991 |
| 337. | 2.76 | A-H-S-T Community School District / 3,613 |
| 338. | 2.75 | Newton Community School District / 21,120 |
| 339. | 2.75 | Albert City-Truesdale Community School District / 1,472 |
| 340. | 2.75 | Anita Community School District / 1,888 |
| 341. | 2.74 | West Monona Community School District / 4,504 |
| 342. | 2.74 | Terril Community School District / 1,015 |
| 343. | 2.74 | PCM Community School District / 4,875 |
| 344. | 2.73 | Gilmore City-Bradgate Community School District / 980 |
| 345. | 2.72 | Clearfield Community School District / 603 |
| 346. | 2.72 | Orient-Macksburg Community School District / 1,155 |
| 347. | 2.72 | Shenandoah Community School District / 6,227 |
| 348. | 2.71 | Eldora-New Providence Community School District / 3,929 |
| 349. | 2.71 | Northwood-Kensett Community School District / 3,109 |
| 350. | 2.67 | Manson Northwest Webster Community School District / 4,006 |
| 351. | 2.67 | South Page Community School District / 1,572 |
| 352. | 2.67 | Woden-Crystal Lake Community School District / 836 |
| 353. | 2.66 | United Community School District / 1,814 |
| 354. | 2.66 | Clarinda Community School District / 6,692 |
| 355. | 2.64 | Nora Springs-Rock Falls Community School District / 2,515 |
| 356. | 2.64 | Southern Cal Community School District / 3,104 |
| 357. | 2.64 | South Clay Community School District / 992 |
| 358. | 2.63 | Spirit Lake Community School District / 8,148 |
| 359. | 2.59 | Lu Verne Community School District / 514 |
| 360. | 2.58 | Fredericksburg Community School District / 1,624 |
| 361. | 2.57 | Pomeroy-Palmer Community School District / 1,376 |
| 362. | 2.54 | Ventura Community School District / 1,736 |
| 363. | 2.33 | Okoboji Community School District / 6,263 |
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.
