| County | American Indian Population |
| Woodbury |  2,453 |
| Polk | 2,220 |
| Tama | 1,298 |
| Scott | 675 |
| Linn | 646 |
| Pottawattamie | 557 |
| Black Hawk | 527 |
| Johnson | 409 |
| Marshall | 288 |
| Wapello | 283 |
| Dallas | 216 |
| Muscatine | 214 |
| Dubuque | 190 |
| Story | 183 |
| Sioux | 172 |
| Emmet | 160 |
| Crawford | 156 |
| Webster | 149 |
| Clinton | 146 |
| Warren | 141 |
| Allamakee | 128 |
| Des Moines | 121 |
| Monona | 110 |
| Jasper | 110 |
| Boone | 105 |
| Buena Vista | 103 |
| Page | 94 |
| Mahaska | 90 |
| Cerro Gordo | 88 |
| Henry | 80 |
| Hamilton | 77 |
| Plymouth | 75 |
| Lee | 71 |
| Marion | 67 |
| Washington | 66 |
| Jones | 62 |
| Mills | 60 |
| Jackson | 59 |
| Louisa | 57 |
| Clarke | 56 |
| Poweshiek | 56 |
| Cass | 55 |
| Hardin | 52 |
| Wright | 52 |
| Benton | 52 |
| Clay | 50 |
| Cherokee | 48 |
| Madison | 47 |
| Kossuth | 46 |
| Harrison | 44 |
| Montgomery | 42 |
| Buchanan | 42 |
| Carroll | 41 |
| Appanoose | 38 |
| Union | 38 |
| Cedar | 37 |
| Shelby | 36 |
| Jefferson | 34 |
| Decatur | 33 |
| Iowa | 32 |
| Floyd | 32 |
| Calhoun | 30 |
| Pocahontas | 29 |
| O'Brien | 28 |
| Palo Alto | 28 |
| Greene | 28 |
| Bremer | 24 |
| Lyon | 24 |
| Worth | 23 |
| Hancock | 22 |
| Guthrie | 22 |
| Fremont | 21 |
| Ida | 21 |
| Winnebago | 21 |
| Franklin | 21 |
| Winneshiek | 21 |
| Fayette | 21 |
| Keokuk | 21 |
| Adams | 20 |
| Humboldt | 19 |
| Howard | 19 |
| Wayne | 19 |
| Osceola | 19 |
| Clayton | 18 |
| Delaware | 18 |
| Lucas | 18 |
| Davis | 17 |
| Dickinson | 17 |
| Monroe | 16 |
| Ringgold | 15 |
| Butler | 15 |
| Taylor | 12 |
| Chickasaw | 12 |
| Audubon | 12 |
| Mitchell | 11 |
| Sac | 10 |
| Adair | 8 |
| Van Buren | 7 |
| Grundy | 0 |