# Counties in Iowa by natural change, July to June, 2025

All 99 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `natural_change_july_june`
- Unit: persons
- Definition: Estimated births minus deaths of residents from July 1 of the previous year through June 30 of the reported year. A negative value means more deaths than births.
- Source: U.S. Census Bureau, Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (https://www.census.gov/programs-surveys/popest/data/data-sets.html)
- Publisher page: https://invokely.ai/en/publishers/us-census-bureau
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/natural-change-july-june/iowa-counties

| Rank | Place | persons |
|---:|---|---:|
| 1 | Polk County | 2,182 |
| 2 | Johnson County | 826 |
| 3 | Dallas County | 751 |
| 4 | Linn County | 433 |
| 5 | Woodbury County | 382 |
| 6 | Black Hawk County | 195 |
| 7 | Sioux County | 191 |
| 8 | Story County | 169 |
| 9 | Scott County | 141 |
| 10 | Buena Vista County | 111 |
| 11 | Warren County | 104 |
| 12 | Dubuque County | 79 |
| 13 | Davis County | 75 |
| 14 | Jasper County | 55 |
| 15 | Crawford County | 45 |
| 16 | Buchanan County | 42 |
| 17 | Benton County | 31 |
| 18 | Wright County | 29 |
| 19 | Hamilton County | 23 |
| 20 | Washington County | 22 |
| 21 | Wayne County | 19 |
| 22 | Wapello County | 18 |
| 23 | Howard County | 16 |
| 24 | Tama County | 14 |
| 25 | Clarke County | 8 |
| 26 | Lyon County | 3 |
| 27 | Madison County | 2 |
| 28 | Decatur County | -1 |
| 29 | Lucas County | -2 |
| 30 | Iowa County | -3 |
| 30 | Plymouth County | -3 |
| 32 | Jones County | -5 |
| 32 | Sac County | -5 |
| 32 | Van Buren County | -5 |
| 32 | Worth County | -5 |
| 36 | Allamakee County | -8 |
| 36 | Humboldt County | -8 |
| 38 | Bremer County | -9 |
| 38 | Winneshiek County | -9 |
| 40 | Delaware County | -11 |
| 40 | Grundy County | -11 |
| 40 | Hancock County | -11 |
| 43 | Adams County | -12 |
| 43 | Taylor County | -12 |
| 45 | Mills County | -14 |
| 45 | Monona County | -14 |
| 47 | Kossuth County | -16 |
| 47 | Palo Alto County | -16 |
| 49 | Carroll County | -17 |
| 49 | Ringgold County | -17 |
| 51 | Adair County | -18 |
| 51 | Louisa County | -18 |
| 53 | Muscatine County | -19 |
| 53 | Osceola County | -19 |
| 55 | O'Brien County | -21 |
| 56 | Cedar County | -23 |
| 56 | Emmet County | -23 |
| 56 | Fremont County | -23 |
| 59 | Mahaska County | -24 |
| 60 | Audubon County | -27 |
| 61 | Marshall County | -28 |
| 61 | Mitchell County | -28 |
| 63 | Franklin County | -30 |
| 63 | Webster County | -30 |
| 65 | Chickasaw County | -31 |
| 66 | Ida County | -32 |
| 66 | Jackson County | -32 |
| 68 | Fayette County | -33 |
| 68 | Pocahontas County | -33 |
| 70 | Floyd County | -36 |
| 71 | Guthrie County | -38 |
| 72 | Keokuk County | -39 |
| 73 | Greene County | -40 |
| 74 | Harrison County | -41 |
| 75 | Clayton County | -43 |
| 75 | Monroe County | -43 |
| 77 | Shelby County | -48 |
| 78 | Marion County | -50 |
| 79 | Butler County | -52 |
| 79 | Jefferson County | -52 |
| 81 | Poweshiek County | -55 |
| 82 | Union County | -59 |
| 83 | Appanoose County | -60 |
| 84 | Clay County | -61 |
| 85 | Winnebago County | -66 |
| 86 | Henry County | -69 |
| 87 | Calhoun County | -72 |
| 88 | Hardin County | -73 |
| 89 | Boone County | -74 |
| 90 | Montgomery County | -77 |
| 91 | Cass County | -91 |
| 92 | Cherokee County | -93 |
| 93 | Page County | -95 |
| 94 | Dickinson County | -104 |
| 95 | Clinton County | -115 |
| 96 | Lee County | -130 |
| 97 | Cerro Gordo County | -139 |
| 98 | Des Moines County | -156 |
| 99 | Pottawattamie County | -240 |