Counties in Iowa by net international migration rate, July to June, 2025
Jefferson County had the highest net international migration rate, July to June of 99 counties in 2025, at 12.84 per 1,000 inhabitants. Monroe County had the lowest, at -0.81 per 1,000 inhabitants. The median was 0.56 per 1,000 inhabitants and the figure for Iowa was 1.83 per 1,000 inhabitants. Source: the U.S. Census Bureau.
Top 40 counties, 2025
Full ranking
| Rank | Counties | 2025 | Change on 2024 |
|---|---|---|---|
| 1 | Jefferson County Estimated | 12.84 | -1.87 pts |
| 2 | Story County Estimated | 4.87 | -1.87 pts |
| 3 | Wapello County Estimated | 4.08 | -3.55 pts |
| 4 | Buena Vista County Estimated | 4.04 | -4.48 pts |
| 5 | Lucas County Estimated | 3.73 | -3.2 pts |
| 6 | Johnson County Estimated | 3.2 | -3.08 pts |
| 7 | Dallas County Estimated | 3.18 | -2.64 pts |
| 8 | O'Brien County Estimated | 3.1 | -1.01 pts |
| 9 | Marshall County Estimated | 3 | -4.63 pts |
| 10 | Black Hawk County Estimated | 2.97 | -1.98 pts |
| 11 | Polk County Estimated | 2.78 | -3.88 pts |
| 12 | Chickasaw County Estimated | 2.74 | -2.72 pts |
| 13 | Franklin County Estimated | 2.52 | -5.74 pts |
| 14 | Clay County Estimated | 2.44 | -1.43 pts |
| 15 | Woodbury County Estimated | 2.44 | -3.72 pts |
| 16 | Linn County Estimated | 2.42 | -1.84 pts |
| 17 | Webster County Estimated | 2.12 | -2.16 pts |
| 18 | Allamakee County Estimated | 2.11 | -8.11 pts |
| 19 | Poweshiek County Estimated | 2.01 | -1.35 pts |
| 20 | Cherokee County Estimated | 2.01 | -0.33 pts |
| 21 | Mitchell County Estimated | 1.88 | -0.48 pts |
| 22 | Jasper County Estimated | 1.81 | -0.53 pts |
| 23 | Winneshiek County Estimated | 1.73 | -1.53 pts |
| 24 | Wright County Estimated | 1.72 | -11.68 pts |
| 25 | Union County Estimated | 1.68 | -0.33 pts |
| 26 | Lee County Estimated | 1.67 | -0.86 pts |
| 27 | Scott County Estimated | 1.58 | -1.19 pts |
| 28 | Grundy County Estimated | 1.46 | -0.4 pts |
| 29 | Des Moines County Estimated | 1.44 | -0.39 pts |
| 30 | Ida County Estimated | 1.33 | -2.94 pts |
| 31 | Davis County Estimated | 1.3 | -0.33 pts |
| 32 | Butler County Estimated | 1.28 | -0.06 pts |
| 33 | Hamilton County Estimated | 1.2 | -9.3 pts |
| 34 | Osceola County Estimated | 1.17 | -2.82 pts |
| 35 | Mahaska County Estimated | 1.05 | -0.36 pts |
| 36 | Hardin County Estimated | 1.03 | -1.39 pts |
| 37 | Appanoose County Estimated | 0.99 | -0.16 pts |
| 38 | Crawford County Estimated | 0.98 | -6.3 pts |
| 39 | Palo Alto County Estimated | 0.9 | -0.34 pts |
| 40 | Dubuque County Estimated | 0.86 | -1.12 pts |
| 41 | Muscatine County Estimated | 0.83 | -2.96 pts |
| 42 | Sioux County Estimated | 0.82 | -5.76 pts |
| 43 | Buchanan County Estimated | 0.77 | -0.29 pts |
| 44 | Louisa County Estimated | 0.67 | -2.27 pts |
| 45 | Tama County Estimated | 0.65 | -1.19 pts |
| 46 | Decatur County Estimated | 0.65 | -0.12 pts |
| 47 | Sac County Estimated | 0.63 | -0.1 pts |
| 48 | Cass County Estimated | 0.62 | -0.38 pts |
| 49 | Pocahontas County Estimated | 0.58 | -2.15 pts |
| 50 | Marion County Estimated | 0.56 | -0.27 pts |
| 51 | Worth County Estimated | 0.55 | -0.14 pts |
| 52 | Page County Estimated | 0.54 | -0.13 pts |
| 53 | Cedar County Estimated | 0.44 | -0.11 pts |
| 54 | Calhoun County Estimated | 0.42 | -0.2 pts |
| 55 | Plymouth County Estimated | 0.39 | -1.59 pts |
| 56 | Guthrie County Estimated | 0.37 | -0.37 pts |
| 57 | Bremer County Estimated | 0.32 | -0.16 pts |
| 58 | Jackson County Estimated | 0.31 | -0.15 pts |
| 59 | Montgomery County Estimated | 0.3 | -0.49 pts |
| 60 | Kossuth County Estimated | 0.28 | -2.21 pts |
| 61 | Adams County Estimated | 0.28 | -0 pts |
| 62 | Dickinson County Estimated | 0.28 | -0.17 pts |
| 63 | Henry County Estimated | 0.26 | -0.87 pts |
| 64 | Cerro Gordo County Estimated | 0.24 | -0.8 pts |
| 65 | Warren County Estimated | 0.23 | -0.4 pts |
| 66 | Hancock County Estimated | 0.19 | -0.47 pts |
| 67 | Clayton County Estimated | 0.18 | -0.29 pts |
| 68 | Madison County Estimated | 0.17 | -0.47 pts |
| 69 | Shelby County Estimated | 0.17 | -2.8 pts |
| 70 | Clinton County Estimated | 0.15 | -0.67 pts |
| 71 | Wayne County Estimated | 0.15 | -0.15 pts |
| 72 | Van Buren County Estimated | 0.14 | 0 pts |
| 73 | Adair County Estimated | 0.13 | -1.61 pts |
| 74 | Howard County Estimated | 0.11 | -3.4 pts |
| 75 | Clarke County Estimated | 0.1 | -2.81 pts |
| 76 | Keokuk County Estimated | 0.1 | -0.61 pts |
| 77 | Harrison County Estimated | 0.07 | -0.14 pts |
| 78 | Carroll County Estimated | 0.05 | -0.24 pts |
| 79 | Audubon County Estimated | 0 | -0.36 pts |
| 79 | Greene County Estimated | 0 | -1.04 pts |
| 79 | Iowa County Estimated | 0 | 0 pts |
| 79 | Washington County Estimated | 0 | -1.02 pts |
| 79 | Winnebago County Estimated | 0 | -0.96 pts |
| 84 | Boone County Estimated | -0.04 | -0.26 pts |
| 85 | Benton County Estimated | -0.04 | -0.15 pts |
| 86 | Fayette County Estimated | -0.05 | -1.1 pts |
| 87 | Delaware County Estimated | -0.06 | -0.11 pts |
| 88 | Humboldt County Estimated | -0.11 | -1.89 pts |
| 89 | Jones County Estimated | -0.14 | -1.14 pts |
| 90 | Fremont County Estimated | -0.15 | -0.15 pts |
| 91 | Lyon County Estimated | -0.16 | -1.94 pts |
| 92 | Pottawattamie County Estimated | -0.19 | -1.66 pts |
| 93 | Floyd County Estimated | -0.2 | -0.2 pts |
| 94 | Emmet County Estimated | -0.22 | -0.65 pts |
| 95 | Monona County Estimated | -0.23 | -0.47 pts |
| 96 | Mills County Estimated | -0.34 | -0.34 pts |
| 97 | Taylor County Estimated | -0.34 | -2.55 pts |
| 98 | Ringgold County Estimated | -0.43 | -0.43 pts |
| 99 | Monroe County Estimated | -0.81 | -0.54 pts |
Other periods
About this ranking
Net international migration from July 1 of the previous year through June 30 of the reported year per 1,000 residents, using the average of the population estimates at the two July 1 endpoints.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite
U.S. Census Bureau. Population Estimates Program: net international migration rate per 1,000 residents, 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.Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Iowa by net international migration rate, July to June using official data, and cite the source.
rank_places {"indicator":"net_international_migration_rate_july_june","level":"province","within":"Iowa","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_international_migration_rate_july_june&level=province&within=Iowa&limit=10Questions
Which county has the highest net international migration rate, July to June?
Jefferson County, with 12.84 per 1,000 inhabitants in 2025, according to the U.S. Census Bureau.
Which county has the lowest net international migration rate, July to June?
Monroe County, with -0.81 per 1,000 inhabitants in 2025.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: net international migration rate per 1,000 residents, 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. Retrieved 2026-10-12.