Counties in Iowa by net international migration, July to June
Polk County had the highest net international migration, July to June of 99 counties in 2021, at 814. Franklin County had the lowest, at -1. The median was 4 and the figure for Iowa was 3,701. Source: the U.S. Census Bureau.
Map of counties, 2021
- Under 0
- 0 to 3
- 3 to 13
- 13 and over
Top 40 counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | Polk County Estimated | 814 | -15.6% |
| 2 | Johnson County Estimated | 551 | -36.5% |
| 3 | Linn County Estimated | 355 | -6.1% |
| 4 | Story County Estimated | 278 | -50.9% |
| 5 | Black Hawk County Estimated | 208 | -25.7% |
| 6 | Woodbury County Estimated | 179 | -10.5% |
| 7 | Dallas County Estimated | 133 | -26.5% |
| 8 | Marshall County Estimated | 121 | -16% |
| 9 | Jefferson County Estimated | 112 | -29.1% |
| 10 | Scott County Estimated | 83 | -62.1% |
| 11 | Pottawattamie County Estimated | 77 | -6.1% |
| 12 | Buena Vista County Estimated | 60 | -33.3% |
| 13 | Wapello County Estimated | 55 | -60.4% |
| 14 | Dubuque County Estimated | 51 | -60.2% |
| 15 | Des Moines County Estimated | 39 | +77.3% |
| 16 | Plymouth County Estimated | 33 | +230% |
| 17 | Sioux County Estimated | 32 | -34.7% |
| 18 | Jasper County Estimated | 30 | +233.3% |
| 19 | Crawford County Estimated | 26 | -78.9% |
| 19 | Louisa County Estimated | 26 | -42.2% |
| 21 | Muscatine County Estimated | 25 | -62.1% |
| 22 | Clarke County Estimated | 23 | -41% |
| 23 | Washington County Estimated | 22 | -24.1% |
| 24 | Bremer County Estimated | 21 | -55.3% |
| 24 | Webster County Estimated | 21 | -63.8% |
| 26 | Wright County Estimated | 19 | -17.4% |
| 27 | Hardin County Estimated | 17 | -22.7% |
| 28 | Winneshiek County Estimated | 16 | +45.5% |
| 29 | Tama County Estimated | 15 | -50% |
| 30 | Buchanan County Estimated | 14 | +366.7% |
| 30 | Cerro Gordo County Estimated | 14 | -58.8% |
| 32 | Dickinson County Estimated | 13 | -23.5% |
| 32 | Fayette County Estimated | 13 | -7.1% |
| 32 | Union County Estimated | 13 | 0% |
| 35 | Allamakee County Estimated | 11 | -56% |
| 35 | Carroll County Estimated | 11 | +120% |
| 37 | Clinton County Estimated | 10 | -73% |
| 37 | Poweshiek County Estimated | 10 | -65.5% |
| 39 | O'Brien County Estimated | 9 | +350% |
| 40 | Mahaska County Estimated | 8 | -70.4% |
| 41 | Mitchell County Estimated | 7 | +600% |
| 41 | Taylor County Estimated | 7 | -56.3% |
| 43 | Decatur County Estimated | 6 | 0% |
| 43 | Grundy County Estimated | 6 | |
| 43 | Jackson County Estimated | 6 | +500% |
| 43 | Marion County Estimated | 6 | -25% |
| 43 | Warren County Estimated | 6 | -14.3% |
| 48 | Benton County Estimated | 5 | -28.6% |
| 48 | Butler County Estimated | 5 | -28.6% |
| 50 | Adair County Estimated | 4 | +100% |
| 50 | Cedar County Estimated | 4 | +300% |
| 50 | Clay County Estimated | 4 | -60% |
| 50 | Clayton County Estimated | 4 | -60% |
| 50 | Hancock County Estimated | 4 | -42.9% |
| 50 | Kossuth County Estimated | 4 | -20% |
| 50 | Mills County Estimated | 4 | 0% |
| 50 | Osceola County Estimated | 4 | -42.9% |
| 50 | Pocahontas County Estimated | 4 | +300% |
| 59 | Appanoose County Estimated | 3 | -40% |
| 59 | Davis County Estimated | 3 | 0% |
| 59 | Emmet County Estimated | 3 | -57.1% |
| 59 | Guthrie County Estimated | 3 | -50% |
| 59 | Humboldt County Estimated | 3 | -75% |
| 59 | Lyon County Estimated | 3 | -62.5% |
| 59 | Page County Estimated | 3 | -86.4% |
| 59 | Winnebago County Estimated | 3 | -57.1% |
| 67 | Boone County Estimated | 2 | -71.4% |
| 67 | Delaware County Estimated | 2 | -66.7% |
| 67 | Hamilton County Estimated | 2 | -75% |
| 67 | Henry County Estimated | 2 | -84.6% |
| 67 | Howard County Estimated | 2 | +300% |
| 67 | Keokuk County Estimated | 2 | -71.4% |
| 67 | Lucas County Estimated | 2 | |
| 67 | Monona County Estimated | 2 | +300% |
| 67 | Shelby County Estimated | 2 | +200% |
| 76 | Audubon County Estimated | 1 | 0% |
| 76 | Cass County Estimated | 1 | -92.3% |
| 76 | Greene County Estimated | 1 | 0% |
| 76 | Worth County Estimated | 1 | |
| 80 | Adams County Estimated | 0 | |
| 80 | Calhoun County Estimated | 0 | -100% |
| 80 | Cherokee County Estimated | 0 | -100% |
| 80 | Fremont County Estimated | 0 | -100% |
| 80 | Harrison County Estimated | 0 | |
| 80 | Ida County Estimated | 0 | |
| 80 | Iowa County Estimated | 0 | +100% |
| 80 | Jones County Estimated | 0 | -100% |
| 80 | Lee County Estimated | 0 | -100% |
| 80 | Madison County Estimated | 0 | -100% |
| 80 | Monroe County Estimated | 0 | |
| 80 | Montgomery County Estimated | 0 | -100% |
| 80 | Palo Alto County Estimated | 0 | -100% |
| 80 | Ringgold County Estimated | 0 | -100% |
| 80 | Sac County Estimated | 0 | +100% |
| 80 | Van Buren County Estimated | 0 | |
| 80 | Wayne County Estimated | 0 | -100% |
| 97 | Chickasaw County Estimated | -1 | -104.8% |
| 97 | Floyd County Estimated | -1 | -108.3% |
| 97 | Franklin County Estimated | -1 | -116.7% |
Other periods
About this ranking
Estimated moves into the area from abroad minus moves out of the area to other countries, from July 1 of the previous year through June 30 of the reported year.
More on how it is measured
- United States: Census Bureau estimates, including people born in the United States and abroad, moves between the states and Puerto Rico, and net movement of the Armed Forces overseas.
- Canada: Statistics Canada immigrants, minus net emigration, plus the net change in non-permanent residents.
- Australia: ABS net overseas migration for the financial year.
- United Kingdom local authorities: Office for National Statistics mid-year estimates, counting people who move for at least 12 months.
A component of each country's official population estimates. Methods differ between the statistical offices, so compare places within a country first. Differs from the World Bank net_migration series, which uses calendar years and a different method.
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, 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, 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, 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, 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, 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-july-june/iowa-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net international migration, 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, 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-july-june/iowa-counties?period=2021.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net international migration, 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, 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-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, 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, 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-july-june/iowa-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, 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, 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, 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-july-june/iowa-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-july-june/iowa-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, 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, July to June using official data, and cite the source.
rank_places {"indicator":"net_international_migration_july_june","level":"province","within":"Iowa","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_international_migration_july_june&level=province&within=Iowa&limit=10Questions
Which county has the highest net international migration, July to June?
Polk County, with 814 in 2021, according to the U.S. Census Bureau.
Which county has the lowest net international migration, July to June?
Franklin County, with -1 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, 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.