Counties in Iowa by net international migration rate, July to June
Jefferson County had the highest net international migration rate, July to June of 99 counties in 2020, at 8.65 per 1,000 inhabitants. Shelby County had the lowest, at -0.17 per 1,000 inhabitants. The median was 0.66 per 1,000 inhabitants and the figure for Iowa was 1.74 per 1,000 inhabitants. Source: the U.S. Census Bureau.
Top 40 counties, 2020
Full ranking
| Rank | Counties | 2020 | Change on 2019 |
|---|---|---|---|
| 1 | Jefferson County Estimated | 8.65 | -2.48 pts |
| 2 | Crawford County Estimated | 7.29 | -2.3 pts |
| 3 | Story County Estimated | 5.79 | -1.62 pts |
| 4 | Johnson County Estimated | 5.67 | -1.6 pts |
| 5 | Buena Vista County Estimated | 4.56 | -1.31 pts |
| 6 | Clarke County Estimated | 4.16 | -1.45 pts |
| 7 | Louisa County Estimated | 4.08 | -0.88 pts |
| 8 | Wapello County Estimated | 3.96 | -1.31 pts |
| 9 | Marshall County Estimated | 3.65 | -0.86 pts |
| 10 | Taylor County Estimated | 2.61 | -0.46 pts |
| 11 | Palo Alto County Estimated | 2.26 | -0.44 pts |
| 12 | Black Hawk County Estimated | 2.14 | -0.58 pts |
| 13 | Polk County Estimated | 1.96 | -0.56 pts |
| 14 | Woodbury County Estimated | 1.94 | -0.43 pts |
| 15 | Dallas County Estimated | 1.9 | -0.51 pts |
| 16 | Bremer County Estimated | 1.86 | -0.37 pts |
| 17 | Wright County Estimated | 1.84 | -0.46 pts |
| 18 | Allamakee County Estimated | 1.83 | -0.5 pts |
| 19 | Tama County Estimated | 1.78 | -0.59 pts |
| 20 | Chickasaw County Estimated | 1.77 | -0.41 pts |
| 21 | Linn County Estimated | 1.66 | -0.42 pts |
| 22 | Webster County Estimated | 1.61 | -0.24 pts |
| 23 | Poweshiek County Estimated | 1.57 | -0.27 pts |
| 24 | Muscatine County Estimated | 1.55 | -0.2 pts |
| 25 | Page County Estimated | 1.46 | -0.39 pts |
| 26 | Sioux County Estimated | 1.4 | -0.35 pts |
| 27 | Hardin County Estimated | 1.32 | -0.52 pts |
| 28 | Washington County Estimated | 1.32 | -0.68 pts |
| 29 | Dubuque County Estimated | 1.31 | -0.23 pts |
| 30 | Humboldt County Estimated | 1.27 | -0.31 pts |
| 31 | Scott County Estimated | 1.26 | -0.3 pts |
| 32 | Mahaska County Estimated | 1.21 | -0.54 pts |
| 33 | Osceola County Estimated | 1.17 | -0.33 pts |
| 34 | Union County Estimated | 1.07 | -0.16 pts |
| 35 | Cass County Estimated | 1.01 | -0.23 pts |
| 36 | Dickinson County Estimated | 0.98 | -0.13 pts |
| 37 | Pottawattamie County Estimated | 0.88 | -0.13 pts |
| 38 | Cerro Gordo County Estimated | 0.8 | -0.09 pts |
| 39 | Clinton County Estimated | 0.8 | -0.26 pts |
| 40 | Floyd County Estimated | 0.77 | +0.64 pts |
| 41 | Decatur County Estimated | 0.77 | -0.25 pts |
| 42 | Emmet County Estimated | 0.76 | -0.42 pts |
| 43 | Calhoun County Estimated | 0.73 | -0.41 pts |
| 44 | Fayette County Estimated | 0.72 | -0.3 pts |
| 45 | Cherokee County Estimated | 0.71 | -0.09 pts |
| 46 | Keokuk County Estimated | 0.69 | -0.29 pts |
| 47 | Lyon County Estimated | 0.68 | -0.17 pts |
| 48 | Winnebago County Estimated | 0.68 | +0.2 pts |
| 49 | Hancock County Estimated | 0.66 | -0.09 pts |
| 50 | Henry County Estimated | 0.66 | -0.1 pts |
| 51 | Clay County Estimated | 0.62 | -0.18 pts |
| 52 | Ringgold County Estimated | 0.62 | -0.2 pts |
| 53 | Montgomery County Estimated | 0.6 | -0.2 pts |
| 54 | Franklin County Estimated | 0.6 | +0.1 pts |
| 55 | Jones County Estimated | 0.58 | -0.1 pts |
| 56 | Clayton County Estimated | 0.57 | -0.28 pts |
| 57 | Des Moines County Estimated | 0.57 | -0.12 pts |
| 58 | Guthrie County Estimated | 0.56 | -0.19 pts |
| 59 | Winneshiek County Estimated | 0.55 | -0.35 pts |
| 60 | Hamilton County Estimated | 0.54 | -0.06 pts |
| 61 | Butler County Estimated | 0.49 | -0.2 pts |
| 62 | Appanoose County Estimated | 0.4 | 0 pts |
| 63 | Plymouth County Estimated | 0.4 | -0.28 pts |
| 64 | Madison County Estimated | 0.37 | -0 pts |
| 65 | Delaware County Estimated | 0.35 | -0.06 pts |
| 66 | Kossuth County Estimated | 0.34 | -0.47 pts |
| 67 | Davis County Estimated | 0.33 | +0.11 pts |
| 68 | Fremont County Estimated | 0.29 | 0 pts |
| 69 | Adair County Estimated | 0.28 | -0 pts |
| 70 | Benton County Estimated | 0.27 | 0 pts |
| 71 | Mills County Estimated | 0.27 | 0 pts |
| 72 | Boone County Estimated | 0.27 | +0.11 pts |
| 73 | Carroll County Estimated | 0.25 | 0 pts |
| 74 | Jasper County Estimated | 0.24 | -0.05 pts |
| 75 | Marion County Estimated | 0.24 | 0 pts |
| 76 | Audubon County Estimated | 0.18 | -0.18 pts |
| 77 | Wayne County Estimated | 0.16 | +0.16 pts |
| 78 | Pocahontas County Estimated | 0.15 | 0 pts |
| 79 | O'Brien County Estimated | 0.15 | +0.07 pts |
| 80 | Buchanan County Estimated | 0.14 | -0.1 pts |
| 81 | Warren County Estimated | 0.13 | -0.02 pts |
| 82 | Greene County Estimated | 0.11 | +0.11 pts |
| 83 | Mitchell County Estimated | 0.09 | -0 pts |
| 84 | Lee County Estimated | 0.06 | +0.15 pts |
| 85 | Cedar County Estimated | 0.05 | 0 pts |
| 86 | Jackson County Estimated | 0.05 | 0 pts |
| 87 | Adams County Estimated | 0 | 0 pts |
| 87 | Grundy County Estimated | 0 | 0 pts |
| 87 | Harrison County Estimated | 0 | 0 pts |
| 87 | Ida County Estimated | 0 | 0 pts |
| 87 | Lucas County Estimated | 0 | +0.12 pts |
| 87 | Monroe County Estimated | 0 | 0 pts |
| 87 | Van Buren County Estimated | 0 | -0.14 pts |
| 87 | Worth County Estimated | 0 | -0.13 pts |
| 95 | Sac County Estimated | -0.1 | -0 pts |
| 96 | Howard County Estimated | -0.11 | -0 pts |
| 97 | Monona County Estimated | -0.12 | -0 pts |
| 98 | Iowa County Estimated | -0.12 | +0.12 pts |
| 99 | Shelby County Estimated | -0.17 | -0 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.Citation styles
APA 7
U.S. Census Bureau. (2026). 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 (Counties in Iowa by net international migration rate, July to June, 2020) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
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, Counties in Iowa by net international migration rate, July to June, 2020. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2020. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. 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. Counties in Iowa by net international migration rate, July to June, 2020. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2020.
Harvard
U.S. Census Bureau (2026) 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, Counties in Iowa by net international migration rate, July to June, 2020 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2020 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_iowa_by_2020,
author = {{U.S. Census Bureau}},
title = {{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: Counties in Iowa by net international migration rate, July to June, 2020}},
year = {2026},
howpublished = {Data set},
url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2020. Publisher attribution: 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.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - 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: Counties in Iowa by net international migration rate, July to June, 2020
PY - 2026
DA - 2026/03/26
PB - U.S. Census Bureau
DB - Invokely
UR - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2 - https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2020
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2020.
N1 - Publisher attribution: 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.
ER -
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 8.65 per 1,000 inhabitants in 2020, according to the U.S. Census Bureau.
Which county has the lowest net international migration rate, July to June?
Shelby County, with -0.17 per 1,000 inhabitants in 2020.
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.