| Rank | $10K to $20K Family Income Percentage ▼ | School District / Population |
| 1. | 13.9% | South Page Community School District / 1,448 |
| 2. | 13.7% | Southern Cal Community School District / 2,907 |
| 3. | 13.4% | Melcher-Dallas Community School District / 2,120 |
| 4. | 12.7% | Central Decatur Community School District / 4,291 |
| 5. | 12.4% | Mount Pleasant Community School District / 12,932 |
| 6. | 12.2% | Red Oak Community School District / 7,016 |
| 7. | 12.0% | Creston Community School District / 9,577 |
| 7. | 12.0% | West Burlington Independent School District / 2,853 |
| 9. | 11.9% | Villisca Community School District / 2,221 |
| 10. | 11.9% | Seymour Community School District / 2,322 |
| 11. | 11.6% | Adair-Casey Community School District / 2,049 |
| 12. | 11.6% | Atlantic Community School District / 8,481 |
| 13. | 11.6% | Ottumwa Community School District / 28,755 |
| 14. | 11.2% | Aurelia Community School District / 1,691 |
| 15. | 11.2% | New London Community School District / 2,882 |
| 16. | 11.0% | Sumner Community School District / 3,342 |
| 17. | 10.8% | Maquoketa Valley Community School District / 4,495 |
| 18. | 10.7% | Postville Community School District / 3,748 |
| 19. | 10.6% | Mount Ayr Community School District / 4,167 |
| 20. | 10.5% | Laurens-Marathon Community School District / 2,197 |
| 21. | 10.4% | Emmetsburg Community School District / 5,062 |
| 22. | 9.9% | Mormon Trail Community School District / 1,729 |
| 23. | 9.9% | Lamoni Community School District / 3,049 |
| 24. | 9.8% | Hamburg Community School District / 1,634 |
| 25. | 9.6% | Humboldt Community School District / 7,490 |
| 26. | 9.5% | Moulton-Udell Community School District / 1,576 |
| 27. | 9.5% | Shenandoah Community School District / 6,309 |
| 28. | 9.3% | Oskaloosa Community School District / 15,898 |
| 29. | 9.2% | Paton-Churdan Community School District / 1,135 |
| 30. | 9.0% | Oelwein Community School District / 9,113 |
| 31. | 9.0% | Muscatine Community School District / 29,260 |
| 32. | 9.0% | Centerville Community School District / 9,023 |
| 33. | 8.9% | Rock Valley Community School District / 4,785 |
| 34. | 8.9% | West Hancock Community School District / 4,261 |
| 35. | 8.8% | Colfax-Mingo Community School District / 4,669 |
| 36. | 8.8% | Harmony Community School District / 2,668 |
| 37. | 8.7% | Prescott Community School District / 654 |
| 38. | 8.7% | Newton Community School District / 21,168 |
| 39. | 8.6% | Graettinger Community School District / 2,211 |
| 39. | 8.6% | Bedford Community School District / 3,158 |
| 41. | 8.6% | Boyer Valley Community School District / 2,817 |
| 42. | 8.5% | Moravia Community School District / 2,305 |
| 43. | 8.5% | Sibley-Ocheyedan Community School District / 4,760 |
| 44. | 8.4% | Keokuk Community School District / 12,795 |
| 45. | 8.4% | Mason City Community School District / 28,931 |
| 46. | 8.3% | Schleswig Community School District / 1,649 |
| 47. | 8.3% | Burlington Community School District / 29,950 |
| 47. | 8.3% | Forest City Community School District / 6,688 |
| 49. | 8.2% | Montezuma Community School District / 3,465 |
| 50. | 8.2% | Waterloo Community School District / 77,879 |
| 51. | 8.2% | Webster City Community School District / 9,969 |
| 52. | 8.1% | Nashua-Plainfield Community School District / 4,098 |
| 53. | 8.1% | Charles City Community School District / 11,307 |
| 54. | 8.1% | Battle Creek-Ida Grove Community School District / 3,919 |
| 54. | 8.1% | Midland Community School District / 3,628 |
| 56. | 8.1% | Twin Rivers Community School District / 1,206 |
| 57. | 8.1% | Griswold Community School District / 3,410 |
| 58. | 8.0% | Osage Community School District / 5,904 |
| 59. | 8.0% | Maple Valley Community School District / 2,868 |
| 60. | 7.9% | Edgewood-Colesburg Community School District / 2,993 |
| 60. | 7.9% | North Tama County Community School District / 3,006 |
| 62. | 7.9% | Des Moines Independent Community School District / 203,403 |
| 63. | 7.8% | George-Little Rock Community School District / 2,578 |
| 64. | 7.8% | Rockwell City-Lytton Community School District / 3,410 |
| 65. | 7.8% | Belle Plaine Community School District / 3,160 |
| 66. | 7.8% | Elk Horn-Kimballton Community School District / 1,526 |
| 67. | 7.7% | Sioux City Community School District / 83,093 |
| 68. | 7.7% | Sioux Central Community School District / 2,831 |
| 69. | 7.6% | C and M Community School District / 3,263 |
| 70. | 7.6% | Dows Community School District / 926 |
| 71. | 7.6% | Council Bluffs Community School District / 60,187 |
| 72. | 7.6% | West Monona Community School District / 4,438 |
| 73. | 7.5% | Manson Northwest Webster Community School District / 4,203 |
| 74. | 7.5% | Tri-County Community School District / 1,794 |
| 75. | 7.5% | Maquoketa Community School District / 8,924 |
| 76. | 7.4% | Saydel Community School District / 7,968 |
| 77. | 7.4% | New Hampton Community School District / 7,244 |
| 78. | 7.4% | Davenport Community School District / 106,768 |
| 79. | 7.3% | Audubon Community School District / 3,482 |
| 80. | 7.3% | Clear Lake Community School District / 8,664 |
| 80. | 7.3% | Guthrie Center Community School District / 2,813 |
| 82. | 7.3% | Cardinal Community School District / 4,419 |
| 83. | 7.2% | Fairfield Community School District / 15,380 |
| 84. | 7.2% | Perry Community School District / 9,525 |
| 85. | 7.2% | Clinton Community School District / 26,242 |
| 85. | 7.2% | Clarinda Community School District / 7,422 |
| 87. | 7.2% | River Valley Community School District / 2,720 |
| 88. | 7.1% | Albia Community School District / 7,346 |
| 88. | 7.1% | Malvern Community School District / 3,346 |
| 90. | 7.1% | Glidden-Ralston Community School District / 2,078 |
| 90. | 7.1% | Davis County Community School District / 8,532 |
| 92. | 7.1% | Iowa Valley Community School District / 3,832 |
| 93. | 7.1% | Southeast Webster-Grand Community School District / 3,565 |
| 94. | 7.0% | Nodaway Valley Community School District / 4,188 |
| 95. | 7.0% | East Union Community School District / 3,265 |
| 96. | 7.0% | Ames Community School District / 56,587 |
| 97. | 6.9% | Cherokee Community School District / 6,485 |
| 98. | 6.9% | Starmont Community School District / 4,089 |
| 99. | 6.8% | Preston Community School District / 1,901 |
| 100. | 6.8% | Columbus Community School District / 4,712 |
| 101. | 6.8% | Coon Rapids-Bayard Community School District / 2,810 |
| 102. | 6.8% | Galva-Holstein Community School District / 2,763 |
| 103. | 6.8% | Cal Community School District / 1,833 |
| 103. | 6.8% | Eagle Grove Community School District / 4,701 |
| 105. | 6.8% | Exira Community School District / 1,770 |
| 105. | 6.8% | Allison-Bristow Community School District / 3,963 |
| 107. | 6.7% | North Kossuth Community School District / 2,392 |
| 108. | 6.6% | Winterset Community School District / 9,165 |
| 109. | 6.6% | Chariton Community School District / 8,372 |
| 110. | 6.6% | Corning Community School District / 2,877 |
| 110. | 6.6% | Aplington-Parkersburg Community School District / 4,144 |
| 112. | 6.6% | Lu Verne Community School District / 479 |
| 112. | 6.6% | South Tama County Community School District / 8,893 |
| 114. | 6.5% | Spencer Community School District / 12,976 |
| 115. | 6.4% | Wayne Community School District / 3,986 |
| 116. | 6.4% | Hinton Community School District / 2,904 |
| 117. | 6.4% | Clearfield Community School District / 662 |
| 118. | 6.3% | West Central Community School District / 1,658 |
| 118. | 6.3% | West Liberty Community School District / 6,173 |
| 120. | 6.3% | Iowa City Community School District / 106,668 |
| 121. | 6.2% | Northeast Hamilton Community School District / 1,504 |
| 121. | 6.2% | Waco Community School District / 3,213 |
| 123. | 6.1% | Turkey Valley Community School District / 3,049 |
| 124. | 6.1% | Essex Community School District / 1,414 |
| 125. | 6.1% | Independence Community School District / 8,881 |
| 126. | 6.1% | Harlan Community School District / 9,058 |
| 127. | 6.1% | Clarke Community School District / 7,970 |
| 127. | 6.1% | North Mahaska Community School District / 2,954 |
| 129. | 6.1% | Rudd-Rockford-Marble Rock Community School District / 3,091 |
| 129. | 6.1% | Fort Dodge Community School District / 29,326 |
| 131. | 6.0% | Farragut Community School District / 1,636 |
| 132. | 6.0% | Clarksville Community School District / 2,108 |
| 133. | 6.0% | Delwood Community School District / 1,190 |
| 133. | 6.0% | Murray Community School District / 1,430 |
| 135. | 6.0% | Pekin Community School District / 3,896 |
| 136. | 6.0% | Denison Community School District / 10,164 |
| 137. | 6.0% | Diagonal Community School District / 686 |
| 138. | 5.8% | Colo-Nesco Community School District / 3,186 |
| 139. | 5.8% | English Valleys Community School District / 2,912 |
| 139. | 5.8% | Tri-Center Community School District / 3,507 |
| 141. | 5.8% | Sigourney Community School District / 3,616 |
| 141. | 5.8% | Sheldon Community School District / 7,300 |
| 143. | 5.8% | Vinton-Shellsburg Community School District / 10,549 |
| 144. | 5.7% | West Bend-Mallard Community School District / 1,911 |
| 145. | 5.7% | Fort Madison Community School District / 17,063 |
| 146. | 5.7% | North Iowa Community School District / 3,286 |
| 147. | 5.6% | South Winneshiek Community School District / 4,437 |
| 148. | 5.5% | West Central Valley Community School District / 5,683 |
| 149. | 5.5% | Fredericksburg Community School District / 1,676 |
| 150. | 5.5% | Carroll Community School District / 14,182 |
| 151. | 5.4% | Pleasantville Community School District / 3,401 |
| 152. | 5.4% | Van Buren Community School District / 5,312 |
| 153. | 5.4% | South O'Brien Community School District / 4,843 |
| 154. | 5.4% | Storm Lake Community School District / 12,279 |
| 154. | 5.4% | Knoxville Community School District / 11,527 |
| 156. | 5.3% | Titonka Consolidated School District / 888 |
| 157. | 5.3% | Jefferson-Scranton Community School District / 6,151 |
| 157. | 5.3% | MFL MarMac Community School District / 5,639 |
| 159. | 5.3% | Tipton Community School District / 5,143 |
| 160. | 5.3% | East Greene Community School District / 1,736 |
| 161. | 5.2% | Stanton Community School District / 1,189 |
| 161. | 5.2% | East Marshall Community School District / 3,657 |
| 163. | 5.2% | Williamsburg Community School District / 6,098 |
| 164. | 5.2% | Durant Community School District / 3,289 |
| 164. | 5.2% | Fremont-Mills Community School District / 2,772 |
| 166. | 5.2% | Madrid Community School District / 3,349 |
| 167. | 5.2% | Tripoli Community School District / 2,611 |
| 168. | 5.1% | Valley Community School District / 3,063 |
| 169. | 5.1% | Newell-Fonda Community School District / 2,452 |
| 170. | 5.1% | Decorah Community School District / 11,717 |
| 170. | 5.1% | Ruthven-Ayrshire Community School District / 1,593 |
| 172. | 5.1% | Western Dubuque Community School District / 21,364 |
| 173. | 5.1% | Howard-Winneshiek Community School District / 8,729 |
| 174. | 5.1% | Clayton Ridge Community School District / 4,952 |
| 175. | 5.0% | North Fayette Community School District / 6,092 |
| 176. | 5.0% | Mid-Prairie Community School District / 8,815 |
| 176. | 5.0% | Eldora-New Providence Community School District / 3,785 |
| 178. | 5.0% | Orient-Macksburg Community School District / 1,258 |
| 179. | 5.0% | Iowa Falls Community School District / 6,886 |
| 180. | 5.0% | West Branch Community School District / 4,163 |
| 181. | 4.9% | East Central Community School District / 2,115 |
| 182. | 4.9% | Cedar Rapids Community School District / 119,948 |
| 183. | 4.9% | Okoboji Community School District / 6,337 |
| 183. | 4.9% | Hartley-Melvin-Sanborn Community School District / 4,054 |
| 185. | 4.9% | Lewis Central Community School District / 15,042 |
| 185. | 4.9% | Dubuque Community School District / 75,820 |
| 187. | 4.9% | Central City Community School District / 2,758 |
| 188. | 4.9% | IKM Community School District / 4,746 |
| 189. | 4.8% | H-L-V Community School District / 2,162 |
| 190. | 4.8% | Pocahontas Area Community School District / 3,545 |
| 190. | 4.8% | Kingsley-Pierson Community School District / 2,621 |
| 192. | 4.8% | North Winneshiek Community School District / 2,124 |
| 192. | 4.8% | Van Meter Community School District / 3,162 |
| 194. | 4.8% | Allamakee Community School District / 8,769 |
| 195. | 4.7% | Andrew Community School District / 1,651 |
| 196. | 4.7% | Sentral Community School District / 1,138 |
| 197. | 4.7% | Alta Community School District / 2,762 |
| 198. | 4.6% | Clarion-Goldfield Community School District / 4,898 |
| 198. | 4.6% | Baxter Community School District / 1,895 |
| 200. | 4.6% | Schaller-Crestland Community School District / 2,241 |
| 201. | 4.6% | Eastern Allamakee Community School District / 2,670 |
| 201. | 4.6% | Estherville Lincoln Central Community School District / 8,093 |
| 201. | 4.6% | Marshalltown Community School District / 30,646 |
| 204. | 4.6% | Waverly-Shell Rock Community School District / 13,637 |
| 205. | 4.6% | St. Ansgar Community School District / 4,057 |
| 206. | 4.5% | Algona Community School District / 9,227 |
| 207. | 4.5% | Anthon-Oto Community School District / 1,741 |
| 208. | 4.5% | Prairie Valley Community School District / 4,045 |
| 209. | 4.5% | College Community School District / 23,841 |
| 210. | 4.5% | Mediapolis Community School District / 5,026 |
| 211. | 4.4% | Pomeroy-Palmer Community School District / 1,575 |
| 212. | 4.4% | Cedar Falls Community School District / 40,441 |
| 212. | 4.4% | Woodbine Community School District / 2,484 |
| 214. | 4.4% | West Harrison Community School District / 2,996 |
| 215. | 4.4% | Central Lyon Community School District / 4,211 |
| 216. | 4.4% | Lawton-Bronson Community School District / 3,245 |
| 216. | 4.4% | Louisa-Muscatine Community School District / 4,777 |
| 218. | 4.3% | Corwith-Wesley Community School District / 1,055 |
| 219. | 4.3% | Wilton Community School District / 4,192 |
| 220. | 4.3% | Lenox Community School District / 1,919 |
| 221. | 4.3% | Central Clinton Community School District / 9,305 |
| 222. | 4.2% | Sheffield Chapin Meservey Thornton Community School District / 4,835 |
| 223. | 4.2% | AGWSR Community School District / 4,803 |
| 223. | 4.2% | Indianola Community School District / 19,809 |
| 225. | 4.2% | North Central Community School District / 5,591 |
| 226. | 4.1% | North Cedar Community School District / 5,092 |
| 227. | 4.1% | Glenwood Community School District / 11,050 |
| 228. | 4.1% | Winfield-Mount Union Community School District / 1,815 |
| 229. | 4.1% | GMG Community School District / 1,929 |
| 229. | 4.1% | Ar-We-Va Community School District / 2,156 |
| 231. | 4.1% | Clay Central-Everly Community School District / 2,177 |
| 232. | 4.0% | Norwalk Community School District / 11,270 |
| 233. | 4.0% | A-H-S-T Community School District / 3,050 |
| 233. | 4.0% | Marcus-Meriden-Cleghorn Community School District / 2,750 |
| 233. | 4.0% | West Sioux Community School District / 4,130 |
| 236. | 3.9% | Northwood-Kensett Community School District / 3,059 |
| 236. | 3.9% | Logan-Magnolia Community School District / 3,094 |
| 236. | 3.9% | BCLUW Community School District / 3,495 |
| 239. | 3.9% | Collins-Maxwell Community School District / 2,624 |
| 240. | 3.9% | Hampton-Dumont Community School District / 7,027 |
| 241. | 3.9% | Wall Lake View Auburn Community School District / 5,840 |
| 242. | 3.9% | Twin Cedars Community School District / 2,478 |
| 243. | 3.8% | Name N/A / 1,421 |
| 244. | 3.8% | Dunkerton Community School District / 2,285 |
| 245. | 3.8% | Grundy Center Community School District / 3,870 |
| 245. | 3.8% | Woodbury Central Community School District / 2,879 |
| 247. | 3.7% | Boyden-Hull Community School District / 4,055 |
| 248. | 3.7% | PCM Community School District / 5,079 |
| 248. | 3.7% | Highland Community School District / 4,060 |
| 250. | 3.7% | Riceville Community School District / 2,813 |
| 251. | 3.7% | Nevada Community School District / 8,187 |
| 252. | 3.7% | Marion Independent School District / 11,702 |
| 253. | 3.7% | Ventura Community School District / 1,727 |
| 254. | 3.6% | West Delaware County Community School District / 9,416 |
| 255. | 3.6% | Washington Community School District / 9,965 |
| 256. | 3.5% | Gilmore City-Bradgate Community School District / 1,015 |
| 257. | 3.5% | Fremont Community School District / 1,058 |
| 258. | 3.5% | Name N/A / 1,588 |
| 259. | 3.5% | Charter Oak-Ute Community School District / 1,895 |
| 260. | 3.5% | Missouri Valley Community School District / 5,042 |
| 261. | 3.5% | Underwood Community School District / 3,784 |
| 261. | 3.5% | Keota Community School District / 1,995 |
| 263. | 3.5% | Union Community School District / 6,821 |
| 264. | 3.4% | South Hamilton Community School District / 3,759 |
| 265. | 3.4% | Calamus-Wheatland Community School District / 2,420 |
| 266. | 3.3% | West Des Moines Community School District / 65,061 |
| 267. | 3.3% | Lynnville-Sully Community School District / 3,152 |
| 267. | 3.3% | Carlisle Community School District / 8,501 |
| 269. | 3.3% | Olin Consolidated School District / 1,540 |
| 270. | 3.3% | Urbandale Community School District / 21,268 |
| 271. | 3.2% | East Buchanan Community School District / 3,047 |
| 272. | 3.2% | Riverside Community School District / 3,751 |
| 273. | 3.2% | Monticello Community School District / 6,540 |
| 274. | 3.2% | Sidney Community School District / 1,763 |
| 275. | 3.1% | Walnut Community School District / 1,280 |
| 276. | 3.1% | Gladbrook-Reinbeck Community School District / 4,464 |
| 277. | 3.1% | Le Mars Community School District / 13,292 |
| 278. | 3.0% | Pella Community School District / 15,525 |
| 279. | 3.0% | Solon Community School District / 6,561 |
| 279. | 3.0% | Central Community School District / 3,451 |
| 281. | 3.0% | Southeast Warren Community School District / 3,204 |
| 282. | 2.9% | Center Point-Urbana Community School District / 5,773 |
| 283. | 2.9% | Morning Sun Community School District / 1,475 |
| 284. | 2.9% | Woodward-Granger Community School District / 5,062 |
| 285. | 2.9% | North Scott Community School District / 15,310 |
| 286. | 2.8% | Boone Community School District / 14,545 |
| 287. | 2.8% | Panorama Community School District / 4,443 |
| 288. | 2.8% | Remsen-Union Community School District / 3,069 |
| 289. | 2.8% | Lake Mills Community School District / 3,806 |
| 290. | 2.8% | Roland-Story Community School District / 5,841 |
| 291. | 2.7% | Belmond-Klemme Community School District / 4,289 |
| 292. | 2.7% | Ballard Community School District / 7,383 |
| 293. | 2.7% | Armstrong-Ringsted Community School District / 2,238 |
| 294. | 2.6% | Southeast Polk Community School District / 31,352 |
| 295. | 2.6% | Ogden Community School District / 3,806 |
| 296. | 2.6% | Wapsie Valley Community School District / 3,925 |
| 297. | 2.6% | Eddyville-Blakesburg Community School District / 3,871 |
| 298. | 2.6% | Bellevue Community School District / 4,841 |
| 299. | 2.6% | Dike-New Hartford Community School District / 4,438 |
| 299. | 2.6% | Wapello Community School District / 3,532 |
| 301. | 2.5% | Linn-Mar Community School District / 36,660 |
| 302. | 2.5% | Bennett Community School District / 1,215 |
| 303. | 2.5% | Bondurant-Farrar Community School District / 6,812 |
| 304. | 2.5% | Bettendorf Community School District / 22,145 |
| 305. | 2.5% | Gilbert Community School District / 6,573 |
| 306. | 2.5% | Akron-Westfield Community School District / 3,235 |
| 307. | 2.4% | Grinnell-Newburg Community School District / 12,522 |
| 308. | 2.4% | Mount Vernon Community School District / 6,558 |
| 309. | 2.4% | Westwood Community School District / 2,738 |
| 310. | 2.4% | Adel-De Soto-Minburn Community School District / 8,103 |
| 311. | 2.4% | Woden-Crystal Lake Community School District / 882 |
| 311. | 2.4% | Anamosa Community School District / 9,281 |
| 313. | 2.3% | North Linn Community School District / 3,624 |
| 313. | 2.3% | Brooklyn-Guernsey-Malcom Community School District / 3,210 |
| 315. | 2.3% | Danville Community School District / 2,580 |
| 316. | 2.3% | Camanche Community School District / 5,615 |
| 317. | 2.2% | Central Lee Community School District / 5,597 |
| 318. | 2.1% | Jesup Community School District / 5,555 |
| 319. | 2.0% | Whiting Community School District / 1,101 |
| 320. | 1.9% | Denver Community School District / 3,669 |
| 320. | 1.9% | Earlham Community School District / 3,209 |
| 322. | 1.9% | Treynor Community School District / 2,990 |
| 323. | 1.9% | MOC-Floyd Valley Community School District / 11,292 |
| 324. | 1.8% | Janesville Consolidated School District / 2,476 |
| 325. | 1.8% | West Marshall Community School District / 4,567 |
| 325. | 1.8% | Lone Tree Community School District / 2,972 |
| 327. | 1.7% | Odebolt-Arthur Community School District / 2,237 |
| 328. | 1.7% | West Lyon Community School District / 4,649 |
| 329. | 1.6% | Spirit Lake Community School District / 8,262 |
| 330. | 1.6% | Hubbard-Radcliffe Community School District / 2,738 |
| 331. | 1.6% | North Polk Community School District / 6,518 |
| 332. | 1.6% | Lisbon Community School District / 2,910 |
| 333. | 1.5% | Benton Community School District / 9,021 |
| 334. | 1.5% | Alburnett Community School District / 3,789 |
| 335. | 1.4% | Martensdale-St. Marys Community School District / 2,649 |
| 336. | 1.4% | Interstate 35 Community School District / 4,746 |
| 337. | 1.4% | Garner-Hayfield Community School District / 3,825 |
| 338. | 1.3% | Sioux Center Community School District / 8,978 |
| 339. | 1.3% | Ankeny Community School District / 49,867 |
| 339. | 1.3% | Dallas Center-Grimes Community School District / 10,585 |
| 341. | 1.2% | Clear Creek-Amana Community School District / 11,260 |
| 342. | 1.1% | Harris-Lake Park Community School District / 1,928 |
| 343. | 1.0% | Sergeant Bluff-Luton Community School District / 5,997 |
| 344. | 0.9% | Pleasant Valley Community School District / 20,478 |
| 345. | 0.8% | Johnston Community School District / 30,545 |
| 346. | 0.7% | Northeast Community School District / 2,976 |
| 347. | 0.7% | Springville Community School District / 2,421 |
| 348. | 0.5% | Waukee Community School District / 36,979 |
Please note that we only rank locations with '$10K to $20K Family Income Percentage' data. The rank above might not be a complete list. Locations without '$10K to $20K Family Income Percentage' 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.
