Iowa Net Migration Rate By County in 2020
According to the US Census Bureau estimates, in 2020, the net migration rate per 1,000 population for Iowa was -0.72. Dallas County had the highest net migration rate per 1,000 population (26.95) followed by Dickinson County (16.93), and Madison County (14.27). On the other hand, Mills County had the lowest net migration rate per 1,000 population (-22.75), followed by Fremont County (-22.72), and Taylor County (-14.66).
Net migration rate for a county refers to the difference between the number of migrants, both domestic and international, moving to the county and those leaving the county per 1,000 of the county's mid-year population. A positive rate is known as a net immigration rate, and a negative rate is known as a net emigration rate.
You can also see similar information for other states and also for the US by state. You can also see links at the bottom of the page for the trend of the net migration rate for each county in Iowa.
Hover over or click on the chart to see this information for each county. The data can also be filtered, sorted, and explored further in a table below.
| County | Net Migration Rate |
|---|---|
| Adair | -6.21 |
| Adams | -3.34 |
| Allamakee | -0.73 |
| Appanoose | -5.29 |
| Audubon | 0.91 |
| Benton | -6.04 |
| Black Hawk | -4.7 |
| Boone | -0.23 |
| Bremer | 4.6 |
| Buchanan | 3.25 |
| Buena Vista | -2.94 |
| Butler | -2.16 |
| Calhoun | -10.79 |
| Carroll | -9.29 |
| Cass | 3.35 |
| Cedar | -1.89 |
| Cerro Gordo | -6.93 |
| Cherokee | 1.25 |
| Chickasaw | -9.84 |
| Clarke | -4.16 |
| Clay | -7.05 |
| Clayton | -8.04 |
| Clinton | -3.33 |
| Crawford | -7.53 |
| Dallas | 26.95 |
| Davis | -3.21 |
| Decatur | -11.91 |
| Delaware | -6.94 |
| Des Moines | -7.97 |
| Dickinson | 16.93 |
| Dubuque | -0.72 |
| Emmet | -13.32 |
| Fayette | -14.63 |
| Floyd | -10.86 |
| Franklin | -10.47 |
| Fremont | -22.72 |
| Greene | -7.47 |
| Grundy | 0.16 |
| Guthrie | 2.61 |
| Hamilton | -5.35 |
| Hancock | -13.89 |
| Hardin | -9.47 |
| Harrison | -5.15 |
| Henry | -6.53 |
| Howard | 3.82 |
| Humboldt | -0.53 |
| Ida | 7.32 |
| Iowa | -0.72 |
| Jackson | -7.21 |
| Jasper | -0.67 |
| Jefferson | 11.94 |
| Johnson | 2.4 |
| Jones | 0.73 |
| Keokuk | -9.67 |
| Kossuth | -5.7 |
| Lee | -0.8 |
| Linn | -0.66 |
| Louisa | -4.35 |
| Lucas | -5.62 |
| Lyon | -9.85 |
| Madison | 14.27 |
| Mahaska | -3.3 |
| Marion | -2.53 |
| Marshall | 0.23 |
| Mills | -22.75 |
| Mitchell | 7.64 |
| Monona | 3.25 |
| Monroe | 10.49 |
| Montgomery | 6.05 |
| Muscatine | -6.97 |
| O'Brien | -6.99 |
| Osceola | 6.36 |
| Page | 1.26 |
| Palo Alto | -0.34 |
| Plymouth | -0.87 |
| Pocahontas | -1.66 |
| Polk | 1.33 |
| Pottawattamie | -1.01 |
| Poweshiek | -0.98 |
| Ringgold | -9.52 |
| Sac | -6.22 |
| Scott | -3.84 |
| Shelby | -3.23 |
| Sioux | -4.17 |
| Story | 5.37 |
| Tama | -6.7 |
| Taylor | -14.66 |
| Union | -3.94 |
| Van Buren | 3.83 |
| Wapello | -5.62 |
| Warren | 11.66 |
| Washington | -4.41 |
| Wayne | 0.78 |
| Webster | -1 |
| Winnebago | -4.75 |
| Winneshiek | -5.97 |
| Woodbury | -4.37 |
| Worth | -8.4 |
| Wright | -9.37 |
Trend of Net Migration Rate for Counties in Iowa
Use the links below to find the trend of the net migration rate for each county in Iowa.