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 2018, at 5.74 per 1,000 inhabitants. Iowa County had the lowest, at -0.25 per 1,000 inhabitants. The median was 0.37 per 1,000 inhabitants and the figure for Iowa was 0.98 per 1,000 inhabitants. Source: the U.S. Census Bureau.
Top 40 counties, 2018
Full ranking
| Rank | Counties | 2018 | Change on 2017 |
|---|---|---|---|
| 1 | Jefferson County Estimated | 5.74 | -5.88 pts |
| 2 | Johnson County Estimated | 3.79 | -4.03 pts |
| 3 | Story County Estimated | 3.37 | -4.47 pts |
| 4 | Crawford County Estimated | 2.93 | +1.41 pts |
| 5 | Wapello County Estimated | 2.77 | -2.15 pts |
| 6 | Clarke County Estimated | 2.33 | -1.09 pts |
| 7 | Floyd County Estimated | 2.15 | +0.95 pts |
| 8 | Louisa County Estimated | 1.97 | -2.49 pts |
| 9 | Buena Vista County Estimated | 1.85 | -3.19 pts |
| 10 | Muscatine County Estimated | 1.47 | -0.46 pts |
| 11 | Taylor County Estimated | 1.46 | -0.16 pts |
| 12 | Palo Alto County Estimated | 1.45 | -1.1 pts |
| 13 | Dallas County Estimated | 1.38 | -1.41 pts |
| 14 | Bremer County Estimated | 1.36 | -0.93 pts |
| 15 | Black Hawk County Estimated | 1.33 | -1.06 pts |
| 16 | Winnebago County Estimated | 1.32 | +0.47 pts |
| 17 | Des Moines County Estimated | 1.02 | -0.27 pts |
| 18 | Marshall County Estimated | 1 | +0.4 pts |
| 19 | Mahaska County Estimated | 0.99 | -0.8 pts |
| 20 | Linn County Estimated | 0.99 | -0.97 pts |
| 21 | Woodbury County Estimated | 0.97 | -0.77 pts |
| 22 | Emmet County Estimated | 0.96 | -0.3 pts |
| 23 | Polk County Estimated | 0.93 | -1.61 pts |
| 24 | Poweshiek County Estimated | 0.92 | -1.04 pts |
| 25 | Decatur County Estimated | 0.88 | -0.24 pts |
| 26 | Wright County Estimated | 0.87 | -0.15 pts |
| 27 | Chickasaw County Estimated | 0.83 | +0.67 pts |
| 28 | Page County Estimated | 0.79 | -0.19 pts |
| 29 | Webster County Estimated | 0.74 | -0.24 pts |
| 30 | Union County Estimated | 0.73 | -0.64 pts |
| 31 | Allamakee County Estimated | 0.72 | -0.8 pts |
| 32 | Dubuque County Estimated | 0.72 | -0.69 pts |
| 33 | Cass County Estimated | 0.69 | -0.6 pts |
| 34 | Hardin County Estimated | 0.65 | -0.29 pts |
| 35 | Dickinson County Estimated | 0.64 | -0.58 pts |
| 36 | Sioux County Estimated | 0.63 | -0.69 pts |
| 37 | Scott County Estimated | 0.61 | -0.74 pts |
| 38 | Tama County Estimated | 0.59 | +0.53 pts |
| 39 | Keokuk County Estimated | 0.59 | -0.4 pts |
| 40 | Washington County Estimated | 0.54 | +0.05 pts |
| 41 | Cherokee County Estimated | 0.53 | -0.35 pts |
| 42 | Humboldt County Estimated | 0.52 | +0.31 pts |
| 43 | Lyon County Estimated | 0.51 | -0 pts |
| 44 | Fayette County Estimated | 0.46 | -0.4 pts |
| 45 | Clayton County Estimated | 0.46 | -0.34 pts |
| 46 | Henry County Estimated | 0.45 | -0.45 pts |
| 47 | Calhoun County Estimated | 0.41 | -0.51 pts |
| 48 | Ringgold County Estimated | 0.4 | -0.4 pts |
| 49 | Hancock County Estimated | 0.37 | +0.1 pts |
| 50 | Clay County Estimated | 0.37 | -0.24 pts |
| 51 | Jones County Estimated | 0.34 | -0.2 pts |
| 52 | Osceola County Estimated | 0.33 | 0 pts |
| 53 | Appanoose County Estimated | 0.32 | -0.16 pts |
| 54 | Pottawattamie County Estimated | 0.29 | -0.13 pts |
| 55 | Guthrie County Estimated | 0.28 | -0.47 pts |
| 56 | Clinton County Estimated | 0.26 | -0.53 pts |
| 57 | Madison County Estimated | 0.25 | -0.13 pts |
| 58 | Delaware County Estimated | 0.23 | -0.17 pts |
| 59 | Cerro Gordo County Estimated | 0.23 | -0.28 pts |
| 60 | Butler County Estimated | 0.21 | -0.55 pts |
| 61 | Kossuth County Estimated | 0.2 | -0.46 pts |
| 62 | Montgomery County Estimated | 0.2 | -0.29 pts |
| 63 | Audubon County Estimated | 0.18 | -0.18 pts |
| 64 | Winneshiek County Estimated | 0.15 | -0.54 pts |
| 65 | Carroll County Estimated | 0.15 | 0 pts |
| 66 | Adair County Estimated | 0.14 | -0.14 pts |
| 67 | Buchanan County Estimated | 0.14 | -0.19 pts |
| 68 | Harrison County Estimated | 0.14 | +0.07 pts |
| 69 | Hamilton County Estimated | 0.13 | -0.2 pts |
| 70 | Marion County Estimated | 0.12 | -0.24 pts |
| 71 | Plymouth County Estimated | 0.12 | -0.16 pts |
| 72 | Franklin County Estimated | 0.1 | -0.29 pts |
| 73 | Mitchell County Estimated | 0.09 | 0 pts |
| 74 | Jasper County Estimated | 0.08 | -0.08 pts |
| 75 | Benton County Estimated | 0.08 | -0.23 pts |
| 76 | Jackson County Estimated | 0.05 | 0 pts |
| 77 | Adams County Estimated | 0 | 0 pts |
| 77 | Davis County Estimated | 0 | -0.22 pts |
| 77 | Fremont County Estimated | 0 | -0.29 pts |
| 77 | Greene County Estimated | 0 | -0.11 pts |
| 77 | Grundy County Estimated | 0 | 0 pts |
| 77 | Ida County Estimated | 0 | 0 pts |
| 77 | Mills County Estimated | 0 | 0 pts |
| 77 | Monroe County Estimated | 0 | 0 pts |
| 77 | O'Brien County Estimated | 0 | -0.07 pts |
| 77 | Van Buren County Estimated | 0 | -0.14 pts |
| 77 | Warren County Estimated | 0 | -0.06 pts |
| 77 | Wayne County Estimated | 0 | 0 pts |
| 77 | Worth County Estimated | 0 | -0.13 pts |
| 90 | Boone County Estimated | -0.04 | -0 pts |
| 91 | Cedar County Estimated | -0.05 | -0.16 pts |
| 92 | Sac County Estimated | -0.1 | -0 pts |
| 93 | Monona County Estimated | -0.12 | -0 pts |
| 94 | Lucas County Estimated | -0.12 | 0 pts |
| 95 | Lee County Estimated | -0.12 | -0.03 pts |
| 96 | Pocahontas County Estimated | -0.15 | -0 pts |
| 97 | Shelby County Estimated | -0.17 | -0 pts |
| 98 | Howard County Estimated | -0.22 | -0 pts |
| 99 | Iowa County Estimated | -0.25 | -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, 2018) [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, 2018. 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=2018. 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, 2018. 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=2018.
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, 2018 [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=2018 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_iowa_by_2018,
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, 2018}},
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=2018. 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, 2018
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=2018
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2018.
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
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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 5.74 per 1,000 inhabitants in 2018, according to the U.S. Census Bureau.
Which county has the lowest net international migration rate, July to June?
Iowa County, with -0.25 per 1,000 inhabitants in 2018.
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.