| Rank | Foreign Born Population Percentage ▼ | School District / Population |
| 1. | 23.0% | Postville Community School District / 3,686 |
| 2. | 22.3% | Storm Lake Community School District / 11,200 |
| 3. | 20.1% | Columbus Community School District / 4,341 |
| 4. | 18.3% | Perry Community School District / 10,784 |
| 5. | 17.0% | Denison Community School District / 9,590 |
| 6. | 15.9% | West Liberty Community School District / 6,281 |
| 7. | 10.5% | Marshalltown Community School District / 29,263 |
| 8. | 10.2% | Ames Community School District / 53,049 |
| 9. | 9.3% | Des Moines Independent Community School District / 197,619 |
| 10. | 9.0% | Lone Tree Community School District / 2,744 |
| 11. | 8.7% | Cal Community School District / 1,803 |
| 12. | 8.6% | Hampton-Dumont Community School District / 6,894 |
| 13. | 8.5% | Lamoni Community School District / 2,994 |
| 14. | 8.2% | Sioux City Community School District / 82,070 |
| 15. | 8.2% | Fairfield Community School District / 14,061 |
| 16. | 8.1% | Urbandale Community School District / 22,991 |
| 17. | 7.8% | West Des Moines Community School District / 67,878 |
| 18. | 7.5% | Iowa City Community School District / 102,262 |
| 19. | 6.8% | West Sioux Community School District / 4,074 |
| 20. | 6.7% | Dows Community School District / 1,116 |
| 21. | 6.7% | Gilbert Community School District / 5,698 |
| 22. | 6.4% | Mount Pleasant Community School District / 12,841 |
| 23. | 6.4% | Johnston Community School District / 28,305 |
| 24. | 6.3% | Clarke Community School District / 7,637 |
| 25. | 6.1% | West Burlington Independent School District / 3,271 |
| 26. | 6.1% | Muscatine Community School District / 28,688 |
| 27. | 6.0% | Sioux Center Community School District / 8,490 |
| 28. | 5.7% | Lenox Community School District / 1,868 |
| 29. | 5.3% | Ottumwa Community School District / 28,330 |
| 30. | 5.2% | South Tama County Community School District / 8,433 |
| 31. | 5.2% | Waterloo Community School District / 76,129 |
| 32. | 5.0% | Seymour Community School District / 2,473 |
| 33. | 4.7% | Schaller-Crestland Community School District / 2,243 |
| 34. | 4.7% | Waukee Community School District / 25,308 |
| 35. | 4.4% | Eastern Allamakee Community School District / 2,614 |
| 36. | 4.3% | Davenport Community School District / 106,281 |
| 37. | 4.3% | Alta Community School District / 3,032 |
| 38. | 3.8% | Clarion-Goldfield Community School District / 4,926 |
| 39. | 3.7% | Washington Community School District / 10,041 |
| 40. | 3.6% | Shenandoah Community School District / 6,055 |
| 41. | 3.5% | Grinnell-Newburg Community School District / 11,894 |
| 42. | 3.5% | Council Bluffs Community School District / 58,251 |
| 43. | 3.5% | Sioux Central Community School District / 2,962 |
| 44. | 3.4% | MOC-Floyd Valley Community School District / 10,409 |
| 45. | 3.4% | Linn-Mar Community School District / 33,580 |
| 46. | 3.4% | Guthrie Center Community School District / 2,956 |
| 47. | 3.3% | Pella Community School District / 14,903 |
| 48. | 3.3% | Rock Valley Community School District / 4,680 |
| 48. | 3.3% | Newell-Fonda Community School District / 2,434 |
| 50. | 3.3% | Hudson Community School District / 3,712 |
| 51. | 3.3% | Eagle Grove Community School District / 4,497 |
| 52. | 3.2% | Clear Creek-Amana Community School District / 10,235 |
| 53. | 3.2% | Boyer Valley Community School District / 2,487 |
| 54. | 3.2% | Cedar Rapids Community School District / 120,689 |
| 55. | 3.2% | Louisa-Muscatine Community School District / 4,322 |
| 56. | 3.1% | Estherville Lincoln Central Community School District / 7,997 |
| 57. | 3.1% | West Hancock Community School District / 3,878 |
| 58. | 3.1% | Forest City Community School District / 6,531 |
| 59. | 3.0% | Wapello Community School District / 4,035 |
| 60. | 3.0% | Lewis Central Community School District / 14,266 |
| 61. | 3.0% | College Community School District / 20,989 |
| 62. | 2.9% | Cedar Falls Community School District / 38,929 |
| 63. | 2.9% | AGWSR Community School District / 4,839 |
| 64. | 2.9% | Alden Community School District / 1,607 |
| 64. | 2.9% | Decorah Community School District / 11,580 |
| 66. | 2.8% | Sheldon Community School District / 6,790 |
| 67. | 2.8% | Sergeant Bluff-Luton Community School District / 6,136 |
| 68. | 2.8% | Pleasant Valley Community School District / 19,491 |
| 69. | 2.8% | East Marshall Community School District / 3,755 |
| 69. | 2.8% | Dallas Center-Grimes Community School District / 10,899 |
| 71. | 2.8% | Bettendorf Community School District / 22,144 |
| 72. | 2.7% | Webster City Community School District / 9,686 |
| 73. | 2.6% | Mediapolis Community School District / 5,268 |
| 74. | 2.6% | Mason City Community School District / 28,767 |
| 75. | 2.6% | Fort Dodge Community School District / 29,528 |
| 76. | 2.6% | Boyden-Hull Community School District / 4,032 |
| 77. | 2.6% | MFL MarMac Community School District / 5,597 |
| 78. | 2.5% | North Iowa Community School District / 3,010 |
| 79. | 2.5% | BCLUW Community School District / 3,286 |
| 80. | 2.5% | Red Oak Community School District / 7,185 |
| 81. | 2.4% | Charles City Community School District / 11,090 |
| 82. | 2.4% | Nevada Community School District / 8,403 |
| 83. | 2.4% | Woodward-Granger Community School District / 4,950 |
| 83. | 2.4% | Bondurant-Farrar Community School District / 5,037 |
| 85. | 2.4% | Oskaloosa Community School District / 15,548 |
| 85. | 2.4% | Nora Springs-Rock Falls Community School District / 2,661 |
| 87. | 2.4% | Highland Community School District / 3,275 |
| 88. | 2.3% | Brooklyn-Guernsey-Malcom Community School District / 3,177 |
| 89. | 2.3% | Sac Community School District / 2,843 |
| 90. | 2.3% | Spencer Community School District / 12,007 |
| 91. | 2.2% | Waverly-Shell Rock Community School District / 12,836 |
| 92. | 2.2% | Sidney Community School District / 1,780 |
| 93. | 2.2% | Belmond-Klemme Community School District / 4,652 |
| 94. | 2.1% | GMG Community School District / 2,054 |
| 94. | 2.1% | Ventura Community School District / 1,776 |
| 96. | 2.1% | Mid-Prairie Community School District / 9,395 |
| 97. | 2.1% | Hartley-Melvin-Sanborn Community School District / 4,465 |
| 97. | 2.1% | Clear Lake Community School District / 8,608 |
| 99. | 2.1% | Cherokee Community School District / 5,957 |
| 99. | 2.1% | Ankeny Community School District / 43,435 |
| 101. | 2.0% | Essex Community School District / 1,472 |
| 102. | 2.0% | Ar-We-Va Community School District / 2,043 |
| 103. | 2.0% | Whiting Community School District / 1,066 |
| 103. | 2.0% | New Hampton Community School District / 7,204 |
| 105. | 2.0% | Burlington Community School District / 29,176 |
| 106. | 2.0% | Harris-Lake Park Community School District / 1,896 |
| 107. | 1.9% | Sheffield Chapin Meservey Thornton Community School District / 3,037 |
| 108. | 1.9% | Terril Community School District / 932 |
| 109. | 1.9% | Sigourney Community School District / 3,648 |
| 110. | 1.9% | Chariton Community School District / 7,691 |
| 111. | 1.9% | South Clay Community School District / 1,060 |
| 112. | 1.9% | Aurelia Community School District / 1,998 |
| 112. | 1.9% | Humboldt Community School District / 7,064 |
| 114. | 1.8% | Diagonal Community School District / 709 |
| 115. | 1.8% | Greene Community School District / 2,098 |
| 116. | 1.8% | Southeast Polk Community School District / 29,537 |
| 116. | 1.8% | Clinton Community School District / 26,148 |
| 118. | 1.8% | Roland-Story Community School District / 5,773 |
| 118. | 1.8% | Morning Sun Community School District / 1,513 |
| 118. | 1.8% | Le Mars Community School District / 12,579 |
| 118. | 1.8% | Glenwood Community School District / 11,205 |
| 122. | 1.7% | Carlisle Community School District / 7,638 |
| 122. | 1.7% | Sibley-Ocheyedan Community School District / 4,779 |
| 124. | 1.7% | Dubuque Community School District / 73,917 |
| 124. | 1.7% | Atlantic Community School District / 8,479 |
| 126. | 1.7% | Valley Community School District / 2,857 |
| 126. | 1.7% | East Greene Community School District / 1,916 |
| 126. | 1.7% | South Hamilton Community School District / 3,776 |
| 129. | 1.7% | Saydel Community School District / 7,682 |
| 130. | 1.7% | Missouri Valley Community School District / 5,102 |
| 130. | 1.7% | Hamburg Community School District / 1,735 |
| 132. | 1.7% | Albert City-Truesdale Community School District / 1,508 |
| 133. | 1.6% | Jefferson-Scranton Community School District / 6,286 |
| 134. | 1.6% | Colo-Nesco Community School District / 3,301 |
| 134. | 1.6% | Fort Madison Community School District / 16,879 |
| 136. | 1.6% | Camanche Community School District / 5,148 |
| 137. | 1.6% | Van Buren Community School District / 5,405 |
| 138. | 1.6% | Pomeroy-Palmer Community School District / 1,412 |
| 138. | 1.6% | Wilton Community School District / 4,501 |
| 140. | 1.5% | Lawton-Bronson Community School District / 3,378 |
| 141. | 1.5% | Allison-Bristow Community School District / 1,839 |
| 142. | 1.5% | Indianola Community School District / 18,698 |
| 143. | 1.5% | Independence Community School District / 9,472 |
| 143. | 1.5% | North Fayette Community School District / 6,172 |
| 143. | 1.5% | Oelwein Community School District / 9,040 |
| 146. | 1.4% | IKM Community School District / 2,562 |
| 147. | 1.4% | Nishna Valley Community School District / 1,263 |
| 147. | 1.4% | Anamosa Community School District / 9,203 |
| 149. | 1.4% | Clarinda Community School District / 6,556 |
| 150. | 1.4% | Manning Community School District / 2,202 |
| 151. | 1.4% | Winfield-Mount Union Community School District / 2,154 |
| 152. | 1.3% | Tipton Community School District / 4,792 |
| 153. | 1.3% | Eldora-New Providence Community School District / 3,900 |
| 154. | 1.3% | West Branch Community School District / 4,086 |
| 154. | 1.3% | Audubon Community School District / 3,715 |
| 156. | 1.3% | Baxter Community School District / 1,783 |
| 157. | 1.3% | North Scott Community School District / 14,502 |
| 158. | 1.3% | St. Ansgar Community School District / 4,087 |
| 159. | 1.3% | Rockwell-Swaledale Community School District / 2,060 |
| 160. | 1.3% | Keokuk Community School District / 12,987 |
| 160. | 1.3% | C and M Community School District / 1,277 |
| 162. | 1.2% | Boone Community School District / 14,151 |
| 163. | 1.2% | Manson Northwest Webster Community School District / 4,341 |
| 163. | 1.2% | Laurens-Marathon Community School District / 2,220 |
| 165. | 1.2% | Moulton-Udell Community School District / 1,738 |
| 166. | 1.2% | Allamakee Community School District / 8,966 |
| 166. | 1.2% | Benton Community School District / 9,113 |
| 168. | 1.2% | Ballard Community School District / 6,645 |
| 168. | 1.2% | Lake Mills Community School District / 4,197 |
| 168. | 1.2% | Clayton Ridge Community School District / 4,773 |
| 171. | 1.2% | Norwalk Community School District / 10,431 |
| 171. | 1.2% | Mount Vernon Community School District / 5,740 |
| 173. | 1.2% | Corwith-Wesley Community School District / 1,124 |
| 173. | 1.2% | Newton Community School District / 21,200 |
| 175. | 1.2% | Spirit Lake Community School District / 8,264 |
| 176. | 1.1% | Preston Community School District / 1,930 |
| 176. | 1.1% | Panorama Community School District / 4,900 |
| 176. | 1.1% | North Cedar Community School District / 5,421 |
| 179. | 1.1% | Walnut Community School District / 1,235 |
| 180. | 1.1% | West Marshall Community School District / 4,267 |
| 181. | 1.1% | Eddyville-Blakesburg Community School District / 4,146 |
| 181. | 1.1% | Delwood Community School District / 1,351 |
| 183. | 1.1% | Carroll Community School District / 14,615 |
| 183. | 1.1% | West Monona Community School District / 4,171 |
| 183. | 1.1% | Dike-New Hartford Community School District / 4,263 |
| 186. | 1.1% | Iowa Falls Community School District / 6,603 |
| 187. | 1.0% | Woodbine Community School District / 2,691 |
| 188. | 1.0% | Western Dubuque Community School District / 21,246 |
| 188. | 1.0% | Algona Community School District / 9,310 |
| 190. | 1.0% | Murray Community School District / 1,598 |
| 190. | 1.0% | Iowa Valley Community School District / 3,406 |
| 192. | 1.0% | Denver Community School District / 3,624 |
| 192. | 1.0% | Howard-Winneshiek Community School District / 8,781 |
| 192. | 1.0% | Wall Lake View Auburn Community School District / 3,245 |
| 195. | 1.0% | Name N/A / 1,133 |
| 195. | 1.0% | Twin Cedars Community School District / 2,466 |
| 195. | 1.0% | Solon Community School District / 5,796 |
| 198. | 1.0% | Albia Community School District / 6,897 |
| 199. | 1.0% | Tri-Center Community School District / 3,386 |
| 199. | 1.0% | Colfax-Mingo Community School District / 4,971 |
| 199. | 1.0% | Kingsley-Pierson Community School District / 2,727 |
| 199. | 1.0% | New London Community School District / 2,959 |
| 199. | 1.0% | Turkey Valley Community School District / 3,260 |
| 204. | 0.9% | Bedford Community School District / 2,966 |
| 205. | 0.9% | West Bend-Mallard Community School District / 1,871 |
| 206. | 0.9% | Center Point-Urbana Community School District / 5,736 |
| 207. | 0.9% | Union Community School District / 6,547 |
| 207. | 0.9% | Twin Rivers Community School District / 1,373 |
| 207. | 0.9% | Calamus-Wheatland Community School District / 2,658 |
| 210. | 0.9% | Starmont Community School District / 3,895 |
| 210. | 0.9% | Galva-Holstein Community School District / 2,813 |
| 212. | 0.8% | Anita Community School District / 2,028 |
| 212. | 0.8% | Knoxville Community School District / 10,886 |
| 214. | 0.8% | Central Lee Community School District / 5,634 |
| 215. | 0.8% | United Community School District / 1,945 |
| 215. | 0.8% | Central Lyon Community School District / 4,157 |
| 217. | 0.8% | Mount Ayr Community School District / 4,189 |
| 217. | 0.8% | Earlham Community School District / 3,104 |
| 217. | 0.8% | Waco Community School District / 2,830 |
| 220. | 0.8% | Maple Valley Community School District / 3,120 |
| 221. | 0.8% | PCM Community School District / 5,095 |
| 222. | 0.8% | Marion Independent School District / 12,018 |
| 222. | 0.8% | Nashua-Plainfield Community School District / 3,868 |
| 224. | 0.8% | Central City Community School District / 3,002 |
| 224. | 0.8% | Stanton Community School District / 1,176 |
| 224. | 0.8% | Akron-Westfield Community School District / 3,369 |
| 224. | 0.8% | Garner-Hayfield Community School District / 3,894 |
| 228. | 0.8% | Gilmore City-Bradgate Community School District / 919 |
| 228. | 0.8% | Maquoketa Community School District / 8,945 |
| 230. | 0.8% | Davis County Community School District / 8,346 |
| 230. | 0.8% | Springville Community School District / 2,395 |
| 230. | 0.8% | Olin Consolidated School District / 1,459 |
| 233. | 0.7% | Maquoketa Valley Community School District / 4,718 |
| 233. | 0.7% | Wapsie Valley Community School District / 3,929 |
| 233. | 0.7% | Durant Community School District / 3,357 |
| 233. | 0.7% | Edgewood-Colesburg Community School District / 2,990 |
| 237. | 0.7% | West Harrison Community School District / 2,860 |
| 237. | 0.7% | Pekin Community School District / 3,832 |
| 239. | 0.7% | Harlan Community School District / 9,088 |
| 239. | 0.7% | Osage Community School District / 5,933 |
| 241. | 0.7% | Montezuma Community School District / 3,220 |
| 241. | 0.7% | Moravia Community School District / 2,252 |
| 243. | 0.7% | Bellevue Community School District / 4,741 |
| 244. | 0.7% | Central Community School District / 3,470 |
| 244. | 0.7% | Adel-De Soto-Minburn Community School District / 7,922 |
| 246. | 0.7% | Lynnville-Sully Community School District / 2,923 |
| 246. | 0.7% | Villisca Community School District / 2,369 |
| 246. | 0.7% | Riverside Community School District / 3,821 |
| 246. | 0.7% | Fredericksburg Community School District / 1,624 |
| 250. | 0.7% | Martensdale-St. Marys Community School District / 2,693 |
| 251. | 0.7% | Okoboji Community School District / 6,201 |
| 252. | 0.6% | Gladbrook-Reinbeck Community School District / 4,523 |
| 253. | 0.6% | South Winneshiek Community School District / 4,439 |
| 253. | 0.6% | Northwood-Kensett Community School District / 3,023 |
| 255. | 0.6% | Titonka Consolidated School District / 967 |
| 255. | 0.6% | Graettinger Community School District / 1,447 |
| 255. | 0.6% | North Tama County Community School District / 3,230 |
| 255. | 0.6% | English Valleys Community School District / 2,426 |
| 259. | 0.6% | Cardinal Community School District / 4,627 |
| 259. | 0.6% | River Valley Community School District / 2,629 |
| 261. | 0.6% | Malvern Community School District / 1,989 |
| 262. | 0.6% | Hinton Community School District / 2,896 |
| 263. | 0.6% | Schleswig Community School District / 1,779 |
| 264. | 0.6% | Adair-Casey Community School District / 2,005 |
| 265. | 0.5% | A-H-S-T Community School District / 3,501 |
| 266. | 0.5% | Treynor Community School District / 2,618 |
| 266. | 0.5% | Exira Community School District / 1,508 |
| 266. | 0.5% | Centerville Community School District / 8,933 |
| 266. | 0.5% | Southern Cal Community School District / 3,204 |
| 270. | 0.5% | Russell Community School District / 1,144 |
| 271. | 0.5% | Westwood Community School District / 2,962 |
| 271. | 0.5% | Williamsburg Community School District / 5,716 |
| 273. | 0.5% | Jesup Community School District / 4,557 |
| 273. | 0.5% | Vinton-Shellsburg Community School District / 10,430 |
| 273. | 0.5% | Woodbury Central Community School District / 3,170 |
| 273. | 0.5% | East Buchanan Community School District / 3,006 |
| 273. | 0.5% | Danville Community School District / 2,985 |
| 278. | 0.5% | Farragut Community School District / 1,632 |
| 278. | 0.5% | Pleasantville Community School District / 3,287 |
| 280. | 0.5% | Mormon Trail Community School District / 1,885 |
| 281. | 0.5% | Nodaway Valley Community School District / 4,216 |
| 281. | 0.5% | Logan-Magnolia Community School District / 3,626 |
| 283. | 0.5% | Glidden-Ralston Community School District / 1,784 |
| 283. | 0.5% | Winterset Community School District / 8,965 |
| 283. | 0.5% | Bennett Community School District / 1,320 |
| 286. | 0.4% | Rudd-Rockford-Marble Rock Community School District / 2,923 |
| 286. | 0.4% | New Market Community School District / 1,148 |
| 286. | 0.4% | Anthon-Oto Community School District / 1,606 |
| 289. | 0.4% | Tripoli Community School District / 2,583 |
| 290. | 0.4% | Rockwell City-Lytton Community School District / 3,351 |
| 290. | 0.4% | Van Meter Community School District / 3,099 |
| 290. | 0.4% | Central Decatur Community School District / 4,049 |
| 290. | 0.4% | Grundy Center Community School District / 3,564 |
| 294. | 0.4% | Hubbard-Radcliffe Community School District / 2,711 |
| 295. | 0.4% | Battle Creek-Ida Grove Community School District / 3,784 |
| 296. | 0.4% | North Polk Community School District / 5,858 |
| 296. | 0.4% | Andrew Community School District / 1,558 |
| 298. | 0.4% | West Central Community School District / 1,822 |
| 298. | 0.4% | North Linn Community School District / 3,180 |
| 300. | 0.4% | Clarksville Community School District / 2,167 |
| 300. | 0.4% | Coon Rapids-Bayard Community School District / 2,464 |
| 302. | 0.3% | Alburnett Community School District / 2,943 |
| 302. | 0.3% | Fremont-Mills Community School District / 2,656 |
| 302. | 0.3% | Stratford Community School District / 1,487 |
| 305. | 0.3% | Collins-Maxwell Community School District / 2,756 |
| 305. | 0.3% | Northeast Community School District / 3,070 |
| 307. | 0.3% | North Mahaska Community School District / 3,149 |
| 307. | 0.3% | Fremont Community School District / 1,237 |
| 309. | 0.3% | Underwood Community School District / 3,494 |
| 309. | 0.3% | East Union Community School District / 3,215 |
| 311. | 0.3% | Creston Community School District / 9,061 |
| 311. | 0.3% | Odebolt-Arthur Community School District / 2,032 |
| 311. | 0.3% | Griswold Community School District / 3,379 |
| 311. | 0.3% | Clay Central-Everly Community School District / 2,317 |
| 315. | 0.3% | Remsen-Union Community School District / 2,826 |
| 316. | 0.3% | Melcher-Dallas Community School District / 2,245 |
| 316. | 0.3% | Aplington-Parkersburg Community School District / 4,150 |
| 316. | 0.3% | Marcus-Meriden-Cleghorn Community School District / 2,912 |
| 316. | 0.3% | Wayne Community School District / 3,393 |
| 316. | 0.3% | Monticello Community School District / 6,409 |
| 316. | 0.3% | Pocahontas Area Community School District / 3,731 |
| 322. | 0.3% | West Delaware County Community School District / 8,976 |
| 322. | 0.3% | Northeast Hamilton Community School District / 1,525 |
| 324. | 0.2% | West Central Valley Community School District / 5,845 |
| 324. | 0.2% | George-Little Rock Community School District / 2,906 |
| 326. | 0.2% | Dunkerton Community School District / 2,664 |
| 326. | 0.2% | Harmony Community School District / 2,619 |
| 328. | 0.2% | Woden-Crystal Lake Community School District / 914 |
| 328. | 0.2% | South O'Brien Community School District / 4,600 |
| 330. | 0.2% | Emmetsburg Community School District / 4,846 |
| 330. | 0.2% | Midland Community School District / 3,726 |
| 330. | 0.2% | Ogden Community School District / 3,770 |
| 333. | 0.2% | Lisbon Community School District / 3,033 |
| 333. | 0.2% | Armstrong-Ringsted Community School District / 2,493 |
| 333. | 0.2% | Central Clinton Community School District / 9,467 |
| 336. | 0.2% | Southeast Webster-Grand Community School District / 3,745 |
| 336. | 0.2% | Sumner Community School District / 3,175 |
| 336. | 0.2% | North Central Community School District / 3,208 |
| 336. | 0.2% | Elk Horn-Kimballton Community School District / 1,547 |
| 340. | 0.2% | Clearfield Community School District / 559 |
| 340. | 0.2% | Interstate 35 Community School District / 4,398 |
| 342. | 0.2% | Lu Verne Community School District / 587 |
| 343. | 0.2% | North Winneshiek Community School District / 1,843 |
| 343. | 0.2% | Southeast Warren Community School District / 3,105 |
| 345. | 0.1% | Janesville Consolidated School District / 2,419 |
| 346. | 0.1% | Charter Oak-Ute Community School District / 1,940 |
| 346. | 0.1% | West Lyon Community School District / 4,052 |
| 346. | 0.1% | Keota Community School District / 1,915 |
| 349. | 0.1% | North Kossuth Community School District / 2,063 |
Please note that we only rank locations with 'Foreign Born Population Percentage' data. The rank above might not be a complete list. Locations without 'Foreign Born Population 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.
