| Rank | Percentage of Population Age 15 or Older ▼ | School District / Population |
| 1. | 91.8% | Dows Community School District / 801 |
| 2. | 89.9% | Ames Community School District / 58,297 |
| 3. | 89.5% | Ventura Community School District / 1,683 |
| 4. | 88.3% | South Page Community School District / 1,510 |
| 5. | 88.0% | Corwith-Wesley Community School District / 921 |
| 6. | 87.3% | Titonka Consolidated School District / 897 |
| 7. | 85.8% | Decorah Community School District / 11,789 |
| 8. | 85.8% | Spirit Lake Community School District / 8,022 |
| 9. | 85.8% | Orient-Macksburg Community School District / 1,209 |
| 10. | 85.7% | Rockwell City-Lytton Community School District / 3,246 |
| 11. | 85.7% | Melcher-Dallas Community School District / 1,674 |
| 12. | 85.7% | Eastern Allamakee Community School District / 2,710 |
| 13. | 85.6% | Elk Horn-Kimballton Community School District / 1,467 |
| 14. | 85.4% | Cedar Falls Community School District / 41,989 |
| 15. | 85.3% | Essex Community School District / 1,445 |
| 16. | 85.3% | Forest City Community School District / 7,723 |
| 17. | 85.1% | West Harrison Community School District / 2,638 |
| 18. | 84.9% | Cal Community School District / 1,713 |
| 18. | 84.9% | Fairfield Community School District / 15,659 |
| 20. | 84.8% | Grinnell-Newburg Community School District / 12,345 |
| 20. | 84.8% | Farragut Community School District / 1,483 |
| 22. | 84.8% | Sheldon Community School District / 7,292 |
| 23. | 84.7% | United Community School District / 2,145 |
| 24. | 84.5% | Sidney Community School District / 1,811 |
| 25. | 84.5% | Cherokee Community School District / 6,432 |
| 26. | 84.4% | Armstrong-Ringsted Community School District / 2,149 |
| 27. | 84.4% | North Fayette Community School District / 6,122 |
| 27. | 84.4% | IKM Community School District / 4,641 |
| 29. | 84.4% | Lamoni Community School District / 3,133 |
| 30. | 84.3% | Corning Community School District / 2,814 |
| 31. | 84.3% | Central Community School District / 3,329 |
| 32. | 84.2% | Andrew Community School District / 1,551 |
| 33. | 84.1% | Brooklyn-Guernsey-Malcom Community School District / 3,173 |
| 34. | 84.1% | Clear Creek-Amana Community School District / 12,321 |
| 35. | 84.0% | South Winneshiek Community School District / 4,523 |
| 36. | 84.0% | Southern Cal Community School District / 2,962 |
| 37. | 84.0% | Diagonal Community School District / 662 |
| 38. | 83.9% | Allison-Bristow Community School District / 4,070 |
| 39. | 83.9% | Audubon Community School District / 3,382 |
| 40. | 83.8% | Atlantic Community School District / 8,459 |
| 41. | 83.8% | Galva-Holstein Community School District / 2,573 |
| 42. | 83.7% | Northwood-Kensett Community School District / 3,314 |
| 43. | 83.7% | Clayton Ridge Community School District / 5,044 |
| 43. | 83.7% | Anamosa Community School District / 9,287 |
| 45. | 83.7% | North Kossuth Community School District / 2,237 |
| 46. | 83.7% | Sentral Community School District / 1,028 |
| 47. | 83.6% | Iowa City Community School District / 110,675 |
| 48. | 83.6% | English Valleys Community School District / 2,890 |
| 49. | 83.6% | Fort Madison Community School District / 17,216 |
| 50. | 83.6% | Twin Cedars Community School District / 2,548 |
| 51. | 83.5% | North Mahaska Community School District / 2,811 |
| 52. | 83.5% | Midland Community School District / 3,620 |
| 53. | 83.4% | Panorama Community School District / 4,575 |
| 54. | 83.4% | Fort Dodge Community School District / 28,658 |
| 55. | 83.3% | Villisca Community School District / 2,189 |
| 56. | 83.3% | Okoboji Community School District / 6,700 |
| 56. | 83.3% | East Central Community School District / 4,005 |
| 58. | 83.3% | Pekin Community School District / 3,690 |
| 59. | 83.2% | Cardinal Community School District / 4,014 |
| 60. | 83.2% | Stanton Community School District / 1,214 |
| 61. | 83.2% | Twin Rivers Community School District / 1,193 |
| 62. | 83.1% | West Branch Community School District / 4,319 |
| 63. | 83.1% | East Greene Community School District / 1,714 |
| 63. | 83.1% | Wayne Community School District / 3,819 |
| 65. | 83.1% | MFL MarMac Community School District / 5,471 |
| 65. | 83.1% | Adair-Casey Community School District / 1,914 |
| 67. | 83.1% | Janesville Consolidated School District / 2,455 |
| 68. | 83.0% | Clarinda Community School District / 7,277 |
| 69. | 83.0% | Allamakee Community School District / 8,539 |
| 70. | 83.0% | Name N/A / 1,521 |
| 71. | 83.0% | Sioux Central Community School District / 2,581 |
| 72. | 82.9% | Walnut Community School District / 1,219 |
| 73. | 82.9% | Dunkerton Community School District / 2,499 |
| 73. | 82.9% | Sheffield Chapin Meservey Thornton Community School District / 4,716 |
| 75. | 82.9% | Mason City Community School District / 28,622 |
| 76. | 82.9% | Aurelia Community School District / 1,646 |
| 77. | 82.8% | Nodaway Valley Community School District / 4,119 |
| 78. | 82.8% | Delwood Community School District / 1,123 |
| 79. | 82.7% | Hudson Community School District / 3,327 |
| 79. | 82.7% | Wall Lake View Auburn Community School District / 5,728 |
| 81. | 82.7% | Gilmore City-Bradgate Community School District / 1,012 |
| 82. | 82.7% | Iowa Falls Community School District / 7,064 |
| 83. | 82.7% | Turkey Valley Community School District / 2,954 |
| 84. | 82.7% | Gladbrook-Reinbeck Community School District / 4,417 |
| 85. | 82.7% | East Marshall Community School District / 4,093 |
| 86. | 82.6% | Centerville Community School District / 8,881 |
| 86. | 82.6% | West Burlington Independent School District / 2,839 |
| 88. | 82.6% | Wilton Community School District / 4,251 |
| 89. | 82.6% | Mount Pleasant Community School District / 12,907 |
| 90. | 82.6% | Saydel Community School District / 8,103 |
| 91. | 82.6% | Waco Community School District / 3,209 |
| 92. | 82.5% | Waverly-Shell Rock Community School District / 13,825 |
| 93. | 82.5% | Prescott Community School District / 645 |
| 94. | 82.5% | New London Community School District / 2,987 |
| 94. | 82.5% | Maquoketa Community School District / 8,888 |
| 96. | 82.4% | Central Lee Community School District / 5,129 |
| 97. | 82.4% | Missouri Valley Community School District / 5,140 |
| 97. | 82.4% | Denver Community School District / 3,847 |
| 99. | 82.2% | Tipton Community School District / 4,999 |
| 100. | 82.2% | Alburnett Community School District / 3,524 |
| 101. | 82.2% | Newton Community School District / 21,242 |
| 102. | 82.2% | Southeast Webster-Grand Community School District / 3,156 |
| 103. | 82.1% | Van Buren Community School District / 5,065 |
| 104. | 82.1% | Ruthven-Ayrshire Community School District / 1,409 |
| 105. | 82.1% | Pocahontas Area Community School District / 5,262 |
| 106. | 82.1% | Laurens-Marathon Community School District / 2,182 |
| 107. | 82.0% | North Central Community School District / 5,594 |
| 108. | 81.9% | Webster City Community School District / 9,959 |
| 108. | 81.9% | Vinton-Shellsburg Community School District / 10,383 |
| 110. | 81.9% | Emmetsburg Community School District / 4,971 |
| 111. | 81.9% | George-Little Rock Community School District / 2,698 |
| 112. | 81.9% | Estherville Lincoln Central Community School District / 7,995 |
| 113. | 81.9% | Urbandale Community School District / 20,873 |
| 114. | 81.9% | AGWSR Community School District / 4,849 |
| 115. | 81.8% | Schleswig Community School District / 1,630 |
| 116. | 81.8% | Sumner Community School District / 3,448 |
| 117. | 81.8% | West Des Moines Community School District / 65,738 |
| 118. | 81.8% | West Sioux Community School District / 3,988 |
| 119. | 81.7% | Hartley-Melvin-Sanborn Community School District / 4,250 |
| 119. | 81.7% | Eagle Grove Community School District / 4,693 |
| 121. | 81.7% | Washington Community School District / 10,221 |
| 122. | 81.7% | Dubuque Community School District / 76,893 |
| 122. | 81.7% | Boone Community School District / 14,429 |
| 124. | 81.7% | Chariton Community School District / 8,330 |
| 125. | 81.6% | Independence Community School District / 9,001 |
| 126. | 81.6% | Springville Community School District / 2,568 |
| 127. | 81.6% | North Tama County Community School District / 3,086 |
| 128. | 81.6% | Clinton Community School District / 25,889 |
| 129. | 81.6% | Iowa Valley Community School District / 3,512 |
| 130. | 81.5% | Grundy Center Community School District / 3,725 |
| 131. | 81.5% | Prairie Valley Community School District / 4,144 |
| 131. | 81.5% | Mediapolis Community School District / 4,736 |
| 133. | 81.5% | Hamburg Community School District / 1,478 |
| 133. | 81.5% | Durant Community School District / 3,345 |
| 135. | 81.4% | Marion Independent School District / 12,255 |
| 136. | 81.4% | Van Meter Community School District / 3,282 |
| 137. | 81.4% | BCLUW Community School District / 3,214 |
| 137. | 81.4% | West Monona Community School District / 4,003 |
| 139. | 81.3% | Jefferson-Scranton Community School District / 6,062 |
| 140. | 81.3% | Monticello Community School District / 6,621 |
| 141. | 81.3% | GMG Community School District / 1,782 |
| 141. | 81.3% | Oelwein Community School District / 8,702 |
| 143. | 81.3% | Lenox Community School District / 2,032 |
| 143. | 81.3% | St. Ansgar Community School District / 4,065 |
| 145. | 81.3% | Central Decatur Community School District / 4,215 |
| 146. | 81.3% | Clay Central-Everly Community School District / 2,322 |
| 147. | 81.3% | Osage Community School District / 5,969 |
| 148. | 81.2% | Olin Consolidated School District / 1,480 |
| 148. | 81.2% | Le Mars Community School District / 13,419 |
| 150. | 81.2% | Exira Community School District / 1,825 |
| 151. | 81.2% | Spencer Community School District / 12,952 |
| 152. | 81.1% | Shenandoah Community School District / 6,133 |
| 153. | 81.1% | Eldora-New Providence Community School District / 3,765 |
| 154. | 81.1% | Red Oak Community School District / 6,975 |
| 155. | 81.1% | Ogden Community School District / 4,003 |
| 156. | 81.0% | South Hamilton Community School District / 3,602 |
| 157. | 81.0% | Clear Lake Community School District / 8,752 |
| 158. | 81.0% | Nashua-Plainfield Community School District / 3,878 |
| 159. | 81.0% | Wapello Community School District / 3,582 |
| 160. | 81.0% | Creston Community School District / 9,674 |
| 161. | 81.0% | North Iowa Community School District / 3,147 |
| 161. | 81.0% | Lynnville-Sully Community School District / 3,164 |
| 163. | 81.0% | Cedar Rapids Community School District / 120,797 |
| 164. | 80.9% | Maple Valley Community School District / 4,404 |
| 165. | 80.9% | Tri-County Community School District / 1,682 |
| 166. | 80.9% | Harris-Lake Park Community School District / 1,717 |
| 167. | 80.9% | Collins-Maxwell Community School District / 2,689 |
| 168. | 80.8% | Lake Mills Community School District / 3,576 |
| 168. | 80.8% | Bennett Community School District / 1,138 |
| 170. | 80.8% | North Cedar Community School District / 5,101 |
| 170. | 80.8% | Ottumwa Community School District / 28,949 |
| 172. | 80.8% | Stratford Community School District / 1,209 |
| 173. | 80.8% | Keokuk Community School District / 12,931 |
| 174. | 80.8% | Westwood Community School District / 3,153 |
| 175. | 80.7% | Central Lyon Community School District / 4,018 |
| 176. | 80.7% | Tripoli Community School District / 2,771 |
| 176. | 80.7% | Lawton-Bronson Community School District / 3,078 |
| 178. | 80.7% | West Delaware County Community School District / 9,003 |
| 179. | 80.7% | Boyer Valley Community School District / 2,740 |
| 180. | 80.6% | Charles City Community School District / 11,219 |
| 181. | 80.6% | Carroll Community School District / 14,060 |
| 182. | 80.6% | Rudd-Rockford-Marble Rock Community School District / 2,956 |
| 182. | 80.6% | Oskaloosa Community School District / 15,978 |
| 184. | 80.6% | A-H-S-T Community School District / 3,146 |
| 184. | 80.6% | Burlington Community School District / 30,070 |
| 186. | 80.6% | Council Bluffs Community School District / 59,876 |
| 187. | 80.6% | Sigourney Community School District / 3,751 |
| 188. | 80.6% | Sibley-Ocheyedan Community School District / 4,603 |
| 188. | 80.6% | Pleasant Valley Community School District / 20,099 |
| 190. | 80.6% | Baxter Community School District / 1,717 |
| 191. | 80.5% | Malvern Community School District / 3,384 |
| 191. | 80.5% | Calamus-Wheatland Community School District / 2,301 |
| 193. | 80.5% | Bedford Community School District / 3,075 |
| 194. | 80.4% | West Hancock Community School District / 4,119 |
| 195. | 80.4% | Murray Community School District / 1,200 |
| 196. | 80.4% | Algona Community School District / 9,417 |
| 197. | 80.4% | Coon Rapids-Bayard Community School District / 2,822 |
| 197. | 80.4% | Montezuma Community School District / 3,480 |
| 199. | 80.4% | Harlan Community School District / 8,844 |
| 200. | 80.3% | Central Clinton Community School District / 9,489 |
| 201. | 80.3% | Glenwood Community School District / 11,075 |
| 201. | 80.3% | Dike-New Hartford Community School District / 4,498 |
| 203. | 80.3% | Indianola Community School District / 20,037 |
| 204. | 80.2% | Waterloo Community School District / 77,406 |
| 205. | 80.1% | Paton-Churdan Community School District / 1,112 |
| 206. | 80.1% | Pleasantville Community School District / 3,661 |
| 207. | 80.1% | Mount Ayr Community School District / 4,141 |
| 208. | 80.1% | Davenport Community School District / 108,996 |
| 209. | 80.1% | Manson Northwest Webster Community School District / 4,280 |
| 210. | 80.0% | Lewis Central Community School District / 15,278 |
| 211. | 80.0% | West Central Valley Community School District / 5,965 |
| 212. | 80.0% | H-L-V Community School District / 2,207 |
| 212. | 80.0% | Union Community School District / 6,347 |
| 214. | 80.0% | Albia Community School District / 7,435 |
| 215. | 80.0% | Danville Community School District / 2,743 |
| 216. | 80.0% | Winterset Community School District / 8,821 |
| 216. | 80.0% | River Valley Community School District / 2,583 |
| 218. | 80.0% | Name N/A / 1,412 |
| 219. | 80.0% | Aplington-Parkersburg Community School District / 4,304 |
| 220. | 79.9% | PCM Community School District / 5,314 |
| 221. | 79.9% | Roland-Story Community School District / 5,841 |
| 222. | 79.8% | East Buchanan Community School District / 2,905 |
| 223. | 79.8% | Marcus-Meriden-Cleghorn Community School District / 2,921 |
| 224. | 79.8% | Graettinger Community School District / 2,201 |
| 225. | 79.7% | New Hampton Community School District / 7,238 |
| 225. | 79.7% | Hampton-Dumont Community School District / 6,739 |
| 227. | 79.7% | North Linn Community School District / 3,653 |
| 228. | 79.7% | Camanche Community School District / 5,616 |
| 229. | 79.7% | North Winneshiek Community School District / 2,037 |
| 229. | 79.7% | Lone Tree Community School District / 2,278 |
| 231. | 79.6% | Eddyville-Blakesburg Community School District / 5,108 |
| 232. | 79.6% | Starmont Community School District / 3,814 |
| 233. | 79.5% | Schaller-Crestland Community School District / 2,388 |
| 233. | 79.5% | Humboldt Community School District / 7,467 |
| 235. | 79.5% | Williamsburg Community School District / 6,496 |
| 235. | 79.5% | Bellevue Community School District / 4,704 |
| 237. | 79.4% | Battle Creek-Ida Grove Community School District / 3,937 |
| 238. | 79.4% | Columbus Community School District / 4,667 |
| 239. | 79.4% | Martensdale-St. Marys Community School District / 3,019 |
| 240. | 79.3% | Ar-We-Va Community School District / 2,230 |
| 240. | 79.3% | Pella Community School District / 15,556 |
| 242. | 79.3% | Solon Community School District / 6,638 |
| 243. | 79.2% | Alta Community School District / 2,893 |
| 244. | 79.2% | Fredericksburg Community School District / 1,824 |
| 245. | 79.2% | Belmond-Klemme Community School District / 4,389 |
| 246. | 79.1% | Logan-Magnolia Community School District / 2,902 |
| 247. | 79.1% | West Bend-Mallard Community School District / 2,108 |
| 248. | 79.1% | Madrid Community School District / 3,512 |
| 249. | 79.1% | Woodward-Granger Community School District / 5,287 |
| 249. | 79.1% | Bettendorf Community School District / 23,151 |
| 251. | 79.1% | Howard-Winneshiek Community School District / 9,042 |
| 252. | 79.0% | West Central Community School District / 1,871 |
| 253. | 79.0% | Clarion-Goldfield Community School District / 4,653 |
| 253. | 79.0% | Tri-Center Community School District / 3,553 |
| 255. | 79.0% | Southeast Polk Community School District / 33,956 |
| 256. | 79.0% | Woodbine Community School District / 2,660 |
| 257. | 78.9% | Storm Lake Community School District / 12,212 |
| 258. | 78.9% | Benton Community School District / 9,202 |
| 259. | 78.8% | Harmony Community School District / 2,823 |
| 259. | 78.8% | Garner-Hayfield Community School District / 3,852 |
| 261. | 78.8% | Interstate 35 Community School District / 4,979 |
| 262. | 78.8% | Maquoketa Valley Community School District / 4,450 |
| 263. | 78.7% | Lu Verne Community School District / 506 |
| 263. | 78.7% | Louisa-Muscatine Community School District / 4,762 |
| 265. | 78.6% | Odebolt-Arthur Community School District / 2,227 |
| 266. | 78.6% | Whiting Community School District / 1,328 |
| 267. | 78.6% | West Marshall Community School District / 4,951 |
| 267. | 78.6% | Southeast Warren Community School District / 3,145 |
| 269. | 78.6% | Woodbury Central Community School District / 2,901 |
| 270. | 78.6% | Belle Plaine Community School District / 3,236 |
| 271. | 78.5% | Mid-Prairie Community School District / 9,096 |
| 272. | 78.5% | Des Moines Independent Community School District / 205,612 |
| 273. | 78.5% | Mormon Trail Community School District / 1,675 |
| 274. | 78.5% | South Tama County Community School District / 8,674 |
| 275. | 78.5% | Clearfield Community School District / 688 |
| 276. | 78.5% | Muscatine Community School District / 29,190 |
| 276. | 78.5% | Moravia Community School District / 2,300 |
| 278. | 78.4% | Center Point-Urbana Community School District / 5,868 |
| 279. | 78.4% | Marshalltown Community School District / 30,396 |
| 280. | 78.3% | Moulton-Udell Community School District / 1,375 |
| 281. | 78.3% | Sioux City Community School District / 83,385 |
| 282. | 78.3% | Morning Sun Community School District / 1,362 |
| 283. | 78.3% | Edgewood-Colesburg Community School District / 2,949 |
| 284. | 78.2% | Clarke Community School District / 8,023 |
| 285. | 78.2% | Northeast Community School District / 2,941 |
| 286. | 78.2% | Adel-De Soto-Minburn Community School District / 8,067 |
| 287. | 78.1% | Winfield-Mount Union Community School District / 1,651 |
| 287. | 78.1% | Knoxville Community School District / 11,702 |
| 289. | 78.1% | Mount Vernon Community School District / 6,779 |
| 290. | 77.9% | MOC-Floyd Valley Community School District / 11,218 |
| 291. | 77.9% | Sioux Center Community School District / 8,923 |
| 292. | 77.9% | College Community School District / 24,875 |
| 293. | 77.8% | Colo-Nesco Community School District / 3,044 |
| 294. | 77.8% | Nevada Community School District / 8,919 |
| 294. | 77.8% | Colfax-Mingo Community School District / 4,262 |
| 296. | 77.8% | Guthrie Center Community School District / 2,625 |
| 297. | 77.7% | North Scott Community School District / 15,673 |
| 297. | 77.7% | Norwalk Community School District / 11,717 |
| 299. | 77.7% | Central City Community School District / 2,998 |
| 300. | 77.7% | East Union Community School District / 3,256 |
| 301. | 77.7% | Fremont-Mills Community School District / 2,550 |
| 302. | 77.6% | Griswold Community School District / 3,404 |
| 303. | 77.5% | Hubbard-Radcliffe Community School District / 2,896 |
| 304. | 77.4% | Kingsley-Pierson Community School District / 2,646 |
| 305. | 77.4% | Johnston Community School District / 34,241 |
| 306. | 77.3% | Wapsie Valley Community School District / 3,790 |
| 307. | 77.1% | C and M Community School District / 2,951 |
| 308. | 77.1% | Clarksville Community School District / 2,094 |
| 309. | 77.0% | Linn-Mar Community School District / 37,068 |
| 310. | 77.0% | Treynor Community School District / 3,013 |
| 311. | 77.0% | Charter Oak-Ute Community School District / 2,099 |
| 312. | 76.9% | Newell-Fonda Community School District / 2,569 |
| 313. | 76.9% | Hinton Community School District / 2,690 |
| 313. | 76.9% | Riverside Community School District / 4,115 |
| 315. | 76.8% | Lisbon Community School District / 2,816 |
| 316. | 76.8% | Western Dubuque Community School District / 22,060 |
| 317. | 76.7% | Keota Community School District / 2,064 |
| 318. | 76.6% | Denison Community School District / 10,354 |
| 319. | 76.6% | Ankeny Community School District / 53,970 |
| 320. | 76.6% | Underwood Community School District / 4,036 |
| 321. | 76.2% | Boyden-Hull Community School District / 4,358 |
| 322. | 76.1% | Northeast Hamilton Community School District / 1,390 |
| 323. | 76.0% | West Liberty Community School District / 6,333 |
| 324. | 75.6% | Perry Community School District / 10,091 |
| 325. | 75.5% | Ballard Community School District / 7,081 |
| 326. | 75.2% | South O'Brien Community School District / 4,582 |
| 327. | 75.1% | Davis County Community School District / 8,677 |
| 328. | 75.1% | Riceville Community School District / 2,655 |
| 329. | 75.1% | Glidden-Ralston Community School District / 2,080 |
| 330. | 75.0% | Highland Community School District / 4,128 |
| 331. | 74.6% | Akron-Westfield Community School District / 3,200 |
| 332. | 74.3% | Seymour Community School District / 2,410 |
| 333. | 74.3% | Remsen-Union Community School District / 3,013 |
| 334. | 74.1% | Valley Community School District / 3,065 |
| 335. | 74.1% | North Polk Community School District / 6,798 |
| 336. | 74.0% | Gilbert Community School District / 6,714 |
| 337. | 73.8% | Waukee Community School District / 41,420 |
| 338. | 73.4% | Carlisle Community School District / 8,924 |
| 339. | 73.4% | Postville Community School District / 3,489 |
| 340. | 72.9% | Dallas Center-Grimes Community School District / 10,190 |
| 341. | 72.0% | Bondurant-Farrar Community School District / 6,685 |
| 342. | 71.9% | Earlham Community School District / 3,358 |
| 343. | 71.0% | Rock Valley Community School District / 5,192 |
| 344. | 70.8% | Sergeant Bluff-Luton Community School District / 6,278 |
| 345. | 70.7% | West Lyon Community School District / 4,823 |
| 346. | 69.5% | Jesup Community School District / 5,895 |
Please note that we only rank locations with 'Percentage of Population Age 15 or Older' data. The rank above might not be a complete list. Locations without 'Percentage of Population Age 15 or Older' data are not listed.
