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 2020, at 964. Shelby County had the lowest, at -2. The median was 8 and the figure for Iowa was 5,511. Source: the U.S. Census Bureau.
Map of counties, 2020
- Under -1
- -1 to 0
- 0 to 6
- 6 to 22
- 22 and over
Top 40 counties, 2020
Full ranking
| Rank | Counties | 2020 | Change on 2019 |
|---|---|---|---|
| 1 | Polk County Estimated | 964 | -21.8% |
| 2 | Johnson County Estimated | 868 | -21.3% |
| 3 | Story County Estimated | 566 | -21.3% |
| 4 | Linn County Estimated | 378 | -19.7% |
| 5 | Black Hawk County Estimated | 280 | -21.6% |
| 6 | Scott County Estimated | 219 | -18.9% |
| 7 | Woodbury County Estimated | 200 | -18% |
| 8 | Dallas County Estimated | 181 | -18.1% |
| 9 | Jefferson County Estimated | 158 | -21.8% |
| 10 | Marshall County Estimated | 144 | -19.6% |
| 11 | Wapello County Estimated | 139 | -24.9% |
| 12 | Dubuque County Estimated | 128 | -14.7% |
| 13 | Crawford County Estimated | 123 | -24.5% |
| 14 | Buena Vista County Estimated | 90 | -22.4% |
| 15 | Pottawattamie County Estimated | 82 | -12.8% |
| 16 | Muscatine County Estimated | 66 | -12% |
| 17 | Webster County Estimated | 58 | -13.4% |
| 18 | Sioux County Estimated | 49 | -19.7% |
| 19 | Bremer County Estimated | 47 | -16.1% |
| 20 | Louisa County Estimated | 45 | -18.2% |
| 21 | Clarke County Estimated | 39 | -26.4% |
| 22 | Clinton County Estimated | 37 | -24.5% |
| 23 | Cerro Gordo County Estimated | 34 | -10.5% |
| 24 | Tama County Estimated | 30 | -25% |
| 25 | Poweshiek County Estimated | 29 | -14.7% |
| 25 | Washington County Estimated | 29 | -34.1% |
| 27 | Mahaska County Estimated | 27 | -30.8% |
| 28 | Allamakee County Estimated | 25 | -21.9% |
| 29 | Wright County Estimated | 23 | -20.7% |
| 30 | Des Moines County Estimated | 22 | -18.5% |
| 30 | Hardin County Estimated | 22 | -29% |
| 30 | Page County Estimated | 22 | -21.4% |
| 33 | Chickasaw County Estimated | 21 | -19.2% |
| 34 | Palo Alto County Estimated | 20 | -16.7% |
| 35 | Dickinson County Estimated | 17 | -10.5% |
| 36 | Taylor County Estimated | 16 | -15.8% |
| 37 | Fayette County Estimated | 14 | -30% |
| 38 | Cass County Estimated | 13 | -18.8% |
| 38 | Henry County Estimated | 13 | -13.3% |
| 38 | Union County Estimated | 13 | -13.3% |
| 41 | Floyd County Estimated | 12 | +500% |
| 41 | Humboldt County Estimated | 12 | -20% |
| 41 | Jones County Estimated | 12 | -14.3% |
| 44 | Winneshiek County Estimated | 11 | -38.9% |
| 45 | Clay County Estimated | 10 | -23.1% |
| 45 | Clayton County Estimated | 10 | -33.3% |
| 45 | Plymouth County Estimated | 10 | -41.2% |
| 48 | Jasper County Estimated | 9 | -18.2% |
| 49 | Cherokee County Estimated | 8 | -11.1% |
| 49 | Hamilton County Estimated | 8 | -11.1% |
| 49 | Lyon County Estimated | 8 | -20% |
| 49 | Marion County Estimated | 8 | 0% |
| 53 | Benton County Estimated | 7 | 0% |
| 53 | Boone County Estimated | 7 | +75% |
| 53 | Butler County Estimated | 7 | -30% |
| 53 | Calhoun County Estimated | 7 | -36.4% |
| 53 | Emmet County Estimated | 7 | -36.4% |
| 53 | Hancock County Estimated | 7 | -12.5% |
| 53 | Keokuk County Estimated | 7 | -30% |
| 53 | Osceola County Estimated | 7 | -22.2% |
| 53 | Warren County Estimated | 7 | -12.5% |
| 53 | Winnebago County Estimated | 7 | +40% |
| 63 | Decatur County Estimated | 6 | -25% |
| 63 | Delaware County Estimated | 6 | -14.3% |
| 63 | Franklin County Estimated | 6 | +20% |
| 63 | Guthrie County Estimated | 6 | -25% |
| 63 | Madison County Estimated | 6 | 0% |
| 63 | Montgomery County Estimated | 6 | -25% |
| 69 | Appanoose County Estimated | 5 | 0% |
| 69 | Carroll County Estimated | 5 | 0% |
| 69 | Kossuth County Estimated | 5 | -58.3% |
| 72 | Mills County Estimated | 4 | 0% |
| 73 | Buchanan County Estimated | 3 | -40% |
| 73 | Davis County Estimated | 3 | +50% |
| 73 | Ringgold County Estimated | 3 | -25% |
| 76 | Adair County Estimated | 2 | 0% |
| 76 | Fremont County Estimated | 2 | 0% |
| 76 | Lee County Estimated | 2 | +166.7% |
| 76 | O'Brien County Estimated | 2 | +100% |
| 80 | Audubon County Estimated | 1 | -50% |
| 80 | Cedar County Estimated | 1 | 0% |
| 80 | Greene County Estimated | 1 | |
| 80 | Jackson County Estimated | 1 | 0% |
| 80 | Mitchell County Estimated | 1 | 0% |
| 80 | Pocahontas County Estimated | 1 | 0% |
| 80 | Wayne County Estimated | 1 | |
| 87 | Adams County Estimated | 0 | |
| 87 | Grundy County Estimated | 0 | |
| 87 | Harrison County Estimated | 0 | |
| 87 | Ida County Estimated | 0 | |
| 87 | Lucas County Estimated | 0 | +100% |
| 87 | Monroe County Estimated | 0 | |
| 87 | Van Buren County Estimated | 0 | -100% |
| 87 | Worth County Estimated | 0 | -100% |
| 95 | Howard County Estimated | -1 | 0% |
| 95 | Monona County Estimated | -1 | 0% |
| 95 | Sac County Estimated | -1 | 0% |
| 98 | Iowa County Estimated | -2 | +50% |
| 98 | Shelby County Estimated | -2 | 0% |
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, 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, 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, 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-july-june/iowa-counties?period=2020. 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, 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-july-june/iowa-counties?period=2020.
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, 2020 [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=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, 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, 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-july-june/iowa-counties?period=2020. 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, 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-july-june/iowa-counties?period=2020
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-july-june/iowa-counties?period=2020.
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 964 in 2020, according to the U.S. Census Bureau.
Which county has the lowest net international migration, July to June?
Shelby County, with -2 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, 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.