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 2021, at 7.11 per 1,000 inhabitants. Franklin County had the lowest, at -0.1 per 1,000 inhabitants. The median was 0.32 per 1,000 inhabitants and the figure for Iowa was 1.16 per 1,000 inhabitants. Source: the U.S. Census Bureau.
Top 40 counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | Jefferson County Estimated | 7.11 | -1.54 pts |
| 2 | Johnson County Estimated | 3.58 | -2.09 pts |
| 3 | Marshall County Estimated | 3.02 | -0.62 pts |
| 4 | Buena Vista County Estimated | 2.89 | -1.68 pts |
| 5 | Story County Estimated | 2.8 | -2.98 pts |
| 6 | Louisa County Estimated | 2.41 | -1.67 pts |
| 7 | Clarke County Estimated | 2.36 | -1.8 pts |
| 8 | Woodbury County Estimated | 1.69 | -0.25 pts |
| 9 | Polk County Estimated | 1.64 | -0.31 pts |
| 10 | Black Hawk County Estimated | 1.59 | -0.55 pts |
| 11 | Crawford County Estimated | 1.59 | -5.7 pts |
| 12 | Wapello County Estimated | 1.56 | -2.41 pts |
| 13 | Linn County Estimated | 1.54 | -0.12 pts |
| 14 | Wright County Estimated | 1.48 | -0.37 pts |
| 15 | Dallas County Estimated | 1.3 | -0.6 pts |
| 16 | Plymouth County Estimated | 1.28 | +0.89 pts |
| 17 | Taylor County Estimated | 1.19 | -1.41 pts |
| 18 | Union County Estimated | 1.08 | +0.01 pts |
| 19 | Hardin County Estimated | 1.01 | -0.3 pts |
| 20 | Des Moines County Estimated | 1.01 | +0.44 pts |
| 21 | Washington County Estimated | 0.98 | -0.34 pts |
| 22 | Sioux County Estimated | 0.89 | -0.51 pts |
| 23 | Tama County Estimated | 0.88 | -0.9 pts |
| 24 | Bremer County Estimated | 0.84 | -1.02 pts |
| 25 | Pottawattamie County Estimated | 0.82 | -0.06 pts |
| 26 | Winneshiek County Estimated | 0.8 | +0.25 pts |
| 27 | Jasper County Estimated | 0.79 | +0.55 pts |
| 28 | Allamakee County Estimated | 0.78 | -1.05 pts |
| 29 | Decatur County Estimated | 0.77 | 0 pts |
| 30 | Dickinson County Estimated | 0.73 | -0.25 pts |
| 31 | Buchanan County Estimated | 0.68 | +0.54 pts |
| 32 | Fayette County Estimated | 0.67 | -0.05 pts |
| 33 | Mitchell County Estimated | 0.66 | +0.57 pts |
| 34 | Osceola County Estimated | 0.65 | -0.53 pts |
| 35 | O'Brien County Estimated | 0.64 | +0.49 pts |
| 36 | Muscatine County Estimated | 0.58 | -0.97 pts |
| 37 | Pocahontas County Estimated | 0.57 | +0.42 pts |
| 38 | Webster County Estimated | 0.57 | -1.05 pts |
| 39 | Poweshiek County Estimated | 0.54 | -1.04 pts |
| 40 | Adair County Estimated | 0.53 | +0.25 pts |
| 41 | Carroll County Estimated | 0.53 | +0.28 pts |
| 42 | Dubuque County Estimated | 0.51 | -0.8 pts |
| 43 | Grundy County Estimated | 0.49 | +0.49 pts |
| 44 | Scott County Estimated | 0.48 | -0.79 pts |
| 45 | Hancock County Estimated | 0.37 | -0.29 pts |
| 46 | Mahaska County Estimated | 0.36 | -0.84 pts |
| 47 | Butler County Estimated | 0.35 | -0.14 pts |
| 48 | Davis County Estimated | 0.33 | -0 pts |
| 49 | Cerro Gordo County Estimated | 0.33 | -0.48 pts |
| 50 | Emmet County Estimated | 0.32 | -0.44 pts |
| 51 | Humboldt County Estimated | 0.31 | -0.95 pts |
| 52 | Jackson County Estimated | 0.31 | +0.26 pts |
| 53 | Guthrie County Estimated | 0.28 | -0.28 pts |
| 54 | Winnebago County Estimated | 0.28 | -0.4 pts |
| 55 | Mills County Estimated | 0.28 | +0.01 pts |
| 56 | Kossuth County Estimated | 0.27 | -0.07 pts |
| 57 | Lyon County Estimated | 0.25 | -0.43 pts |
| 58 | Appanoose County Estimated | 0.24 | -0.16 pts |
| 59 | Clay County Estimated | 0.24 | -0.38 pts |
| 60 | Clayton County Estimated | 0.23 | -0.34 pts |
| 61 | Lucas County Estimated | 0.23 | +0.23 pts |
| 62 | Monona County Estimated | 0.23 | +0.35 pts |
| 63 | Cedar County Estimated | 0.22 | +0.16 pts |
| 64 | Clinton County Estimated | 0.22 | -0.58 pts |
| 65 | Howard County Estimated | 0.21 | +0.32 pts |
| 66 | Keokuk County Estimated | 0.2 | -0.49 pts |
| 67 | Page County Estimated | 0.2 | -1.26 pts |
| 68 | Benton County Estimated | 0.19 | -0.08 pts |
| 69 | Marion County Estimated | 0.18 | -0.06 pts |
| 70 | Audubon County Estimated | 0.18 | -0.01 pts |
| 71 | Shelby County Estimated | 0.17 | +0.34 pts |
| 72 | Worth County Estimated | 0.13 | +0.13 pts |
| 73 | Hamilton County Estimated | 0.13 | -0.41 pts |
| 74 | Greene County Estimated | 0.11 | 0 pts |
| 75 | Delaware County Estimated | 0.11 | -0.24 pts |
| 76 | Warren County Estimated | 0.11 | -0.02 pts |
| 77 | Henry County Estimated | 0.1 | -0.56 pts |
| 78 | Cass County Estimated | 0.08 | -0.94 pts |
| 79 | Boone County Estimated | 0.07 | -0.19 pts |
| 80 | Adams County Estimated | 0 | 0 pts |
| 80 | Calhoun County Estimated | 0 | -0.73 pts |
| 80 | Cherokee County Estimated | 0 | -0.71 pts |
| 80 | Fremont County Estimated | 0 | -0.29 pts |
| 80 | Harrison County Estimated | 0 | 0 pts |
| 80 | Ida County Estimated | 0 | 0 pts |
| 80 | Iowa County Estimated | 0 | +0.12 pts |
| 80 | Jones County Estimated | 0 | -0.58 pts |
| 80 | Lee County Estimated | 0 | -0.06 pts |
| 80 | Madison County Estimated | 0 | -0.37 pts |
| 80 | Monroe County Estimated | 0 | 0 pts |
| 80 | Montgomery County Estimated | 0 | -0.6 pts |
| 80 | Palo Alto County Estimated | 0 | -2.26 pts |
| 80 | Ringgold County Estimated | 0 | -0.62 pts |
| 80 | Sac County Estimated | 0 | +0.1 pts |
| 80 | Van Buren County Estimated | 0 | 0 pts |
| 80 | Wayne County Estimated | 0 | -0.16 pts |
| 97 | Floyd County Estimated | -0.06 | -0.84 pts |
| 98 | Chickasaw County Estimated | -0.08 | -1.85 pts |
| 99 | Franklin County Estimated | -0.1 | -0.7 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, 2021) [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, 2021. 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=2021. 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, 2021. 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=2021.
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, 2021 [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=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_iowa_by_2021,
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, 2021}},
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=2021. 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, 2021
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=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2021.
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 7.11 per 1,000 inhabitants in 2021, according to the U.S. Census Bureau.
Which county has the lowest net international migration rate, July to June?
Franklin County, with -0.1 per 1,000 inhabitants in 2021.
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.