Iowa Natural Population Increase Rate By County in 2020
According to the US Census Bureau estimates, in 2020, the natural population increase rate for Iowa was 1.97, and the top three counties that had the highest natural population increase rate were:
- Davis County: 8.2
- Dallas County: 8.09
- Buena Vista County: 7.15
On the other hand, the top 3 counties that had the lowest natural population increase rate were:
- Monona County: -6.39
- Ida County: -5.86
- Cherokee County: -4.99
Use the interactive visualization and the table below to explore the natural population increase rate for each Iowa county in 2020. You can also find links to the historical natural population increase rate for each county below.
Natural Population Increase Rate refers to the natural increase (number of births minus number of deaths) during a year per 1,000 population at midyear.
| County | Natural Pop. Increase Rate |
|---|---|
| Adair | 0.28 |
| Adams | -0.83 |
| Allamakee | -1.32 |
| Appanoose | -2.32 |
| Audubon | -2.92 |
| Benton | 0.98 |
| Black Hawk | 2.38 |
| Boone | -2.13 |
| Bremer | 0.99 |
| Buchanan | 3.35 |
| Buena Vista | 7.15 |
| Butler | -2.78 |
| Calhoun | -4.09 |
| Carroll | -0.85 |
| Cass | -3.74 |
| Cedar | -1.24 |
| Cerro Gordo | -1.87 |
| Cherokee | -4.99 |
| Chickasaw | 0.67 |
| Clarke | 1.07 |
| Clay | -0.31 |
| Clayton | -1.95 |
| Clinton | -0.28 |
| Crawford | 3.56 |
| Dallas | 8.09 |
| Davis | 8.2 |
| Decatur | 1.54 |
| Delaware | -0.06 |
| Des Moines | -0.77 |
| Dickinson | -1.95 |
| Dubuque | 2.32 |
| Emmet | -0.76 |
| Fayette | -1.6 |
| Floyd | -0.32 |
| Franklin | -0.6 |
| Fremont | -4.69 |
| Greene | -2.26 |
| Grundy | -1.06 |
| Guthrie | -2.98 |
| Hamilton | -0.14 |
| Hancock | -0.85 |
| Hardin | -4.43 |
| Harrison | -2.36 |
| Henry | -0.45 |
| Howard | -0.55 |
| Humboldt | -2 |
| Ida | -5.86 |
| Iowa | 1.97 |
| Jackson | -1.61 |
| Jasper | -0.03 |
| Jefferson | -2.74 |
| Johnson | 5.77 |
| Jones | -1.55 |
| Keokuk | -0.89 |
| Kossuth | -0.34 |
| Lee | -3.99 |
| Linn | 3.31 |
| Louisa | -0.18 |
| Lucas | 0.47 |
| Lyon | 5.6 |
| Madison | 1.04 |
| Mahaska | 0.58 |
| Marion | -0.87 |
| Marshall | 0.36 |
| Mills | -1.07 |
| Mitchell | 0.19 |
| Monona | -6.39 |
| Monroe | 1.04 |
| Montgomery | -4.33 |
| Muscatine | 2.83 |
| O'Brien | -1.53 |
| Osceola | -2.01 |
| Page | -4.97 |
| Palo Alto | -2.82 |
| Plymouth | 1.63 |
| Pocahontas | -2.12 |
| Polk | 5.19 |
| Pottawattamie | 0.17 |
| Poweshiek | -3.26 |
| Ringgold | -3.93 |
| Sac | -1.14 |
| Scott | 2.74 |
| Shelby | -1.05 |
| Sioux | 6.77 |
| Story | 2.68 |
| Tama | 0.71 |
| Taylor | -0.65 |
| Union | -1.48 |
| Van Buren | -0.14 |
| Wapello | 0.86 |
| Warren | 2.22 |
| Washington | 2.68 |
| Wayne | -0.31 |
| Webster | -0.36 |
| Winnebago | -3 |
| Winneshiek | -0.55 |
| Woodbury | 4.39 |
| Worth | 1.9 |
| Wright | -1.28 |
Historical Natural Population Increase Rate for Counties in Iowa
Use the links below to find the historical natural population increase rate for each county in Iowa.