Ranking of Iowa Counties By Birth Rate per 1K in 2020
Updated on June 21, 2025.
Based on the US Census Vintage data estimates, in 2020, the Birth Rate per 1K for Iowa was 11.73. Among all Iowa counties, Davis County had the highest birth rate (17.5), followed by Lyon County (14.77), and Buena Vista County (14.6).
The chart below shows the top 10 counties, and the table below shows the ranking of all Iowa counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
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Related Topics: Iowa Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2020 Census.
See this for other years:
Ranking of Iowa Counties By Birth Rate per 1K in 2020
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| Rank | County | Birth Rate |
|---|---|---|
| 1 | Davis County | 17.5 |
| 2 | Lyon County | 14.77 |
| 3 | Buena Vista County | 14.6 |
| 4 | Sioux County | 14.29 |
| 5 | Wayne County | 14.03 |
| 6 | Adair County | 13.84 |
| 7 | Woodbury County | 13.78 |
| 8 | Dallas County | 13.74 |
| 9 | Van Buren County | 13.6 |
| 10 | Polk County | 13.24 |
| 11 | Howard County | 12.99 |
| 12 | Washington County | 12.95 |
| 13 | Clarke County | 12.92 |
| 14 | Buchanan County | 12.91 |
| 15 | Crawford County | 12.86 |
| 16 | Allamakee County | 12.74 |
| 17 | Wright County | 12.66 |
| 18 | Marshall County | 12.41 |
| 19 | Wapello County | 12.4 |
| 20 | Mitchell County | 12.35 |
| 21 | Dubuque County | 12.27 |
| 22 | Black Hawk County | 12.17 |
| 23 | Muscatine County | 12.05 |
| 24 | Hamilton County | 11.93 |
| 24 | Webster County | 11.93 |
| 25 | Tama County | 11.87 |
| 26 | Scott County | 11.81 |
| 27 | Kossuth County | 11.75 |
| 27 | Linn County | 11.75 |
| 28 | Mahaska County | 11.74 |
| 29 | Lucas County | 11.71 |
| 30 | Chickasaw County | 11.69 |
| 31 | O'Brien County | 11.65 |
| 32 | Clay County | 11.6 |
| 33 | Emmet County | 11.57 |
| 34 | Decatur County | 11.52 |
| 35 | Appanoose County | 11.46 |
| 36 | Des Moines County | 11.45 |
| 37 | Pottawattamie County | 11.33 |
| 38 | Carroll County | 11.24 |
| 39 | Harrison County | 11.23 |
| 39 | Johnson County | 11.23 |
| 40 | Sac County | 11.2 |
| 41 | Benton County | 11.15 |
| 41 | Louisa County | 11.15 |
| 42 | Warren County | 11.14 |
| 43 | Delaware County | 11.12 |
| 44 | Clinton County | 11.1 |
| 45 | Humboldt County | 11.07 |
| 46 | Palo Alto County | 11.06 |
| 47 | Monroe County | 11 |
| 47 | Shelby County | 11 |
| 48 | Plymouth County | 10.99 |
| 49 | Floyd County | 10.98 |
| 50 | Jackson County | 10.94 |
| 51 | Cerro Gordo County | 10.93 |
| 52 | Worth County | 10.84 |
| 53 | Calhoun County | 10.79 |
| 54 | Montgomery County | 10.78 |
| 55 | Franklin County | 10.77 |
| 56 | Jasper County | 10.76 |
| 57 | Pocahontas County | 10.73 |
| 58 | Monona County | 10.68 |
| 59 | Cass County | 10.61 |
| 60 | Taylor County | 10.59 |
| 61 | Butler County | 10.58 |
| 62 | Audubon County | 10.57 |
| 63 | Madison County | 10.55 |
| 63 | Osceola County | 10.55 |
| 64 | Bremer County | 10.46 |
| 65 | Fayette County | 10.4 |
| 66 | Grundy County | 10.39 |
| 66 | Hancock County | 10.39 |
| 67 | Keokuk County | 10.36 |
| 68 | Henry County | 10.22 |
| 68 | Iowa County | 10.22 |
| 69 | Greene County | 10.18 |
| 70 | Cherokee County | 10.17 |
| 71 | Clayton County | 10.11 |
| 71 | Marion County | 10.11 |
| 72 | Adams County | 10.01 |
| 73 | Boone County | 9.96 |
| 73 | Ida County | 9.96 |
| 74 | Union County | 9.93 |
| 75 | Lee County | 9.77 |
| 76 | Ringgold County | 9.72 |
| 77 | Jones County | 9.6 |
| 78 | Hardin County | 9.59 |
| 79 | Winnebago County | 9.4 |
| 80 | Fremont County | 9.38 |
| 80 | Winneshiek County | 9.38 |
| 81 | Cedar County | 9.29 |
| 82 | Guthrie County | 9.03 |
| 82 | Mills County | 9.03 |
| 83 | Poweshiek County | 8.74 |
| 84 | Dickinson County | 8.73 |
| 85 | Page County | 8.68 |
| 86 | Story County | 8.44 |
| 87 | Jefferson County | 7.72 |
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