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 2015, at 12.43 per 1,000 inhabitants. Boone County had the lowest, at -0.19 per 1,000 inhabitants. The median was 0.58 per 1,000 inhabitants and the figure for Iowa was 1.83 per 1,000 inhabitants. Source: the U.S. Census Bureau.
Top 40 counties, 2015
Full ranking
| Rank | Counties | 2015 | Change on 2014 |
|---|---|---|---|
| 1 | Jefferson County Estimated | 12.43 | -4.9 pts |
| 2 | Story County Estimated | 7.5 | -2.68 pts |
| 3 | Johnson County Estimated | 5.92 | -1.99 pts |
| 4 | Crawford County Estimated | 4.85 | +3 pts |
| 5 | Buena Vista County Estimated | 4.64 | +0.47 pts |
| 6 | Louisa County Estimated | 3.99 | -0.96 pts |
| 7 | Dallas County Estimated | 3.22 | -0.96 pts |
| 8 | Wapello County Estimated | 2.85 | -0.56 pts |
| 9 | Marshall County Estimated | 2.74 | +0.22 pts |
| 10 | Black Hawk County Estimated | 2.52 | -0.76 pts |
| 11 | Muscatine County Estimated | 2.37 | +0.16 pts |
| 12 | Palo Alto County Estimated | 2.3 | +0.11 pts |
| 13 | Allamakee County Estimated | 2.22 | +0.65 pts |
| 14 | Polk County Estimated | 2.1 | -0.9 pts |
| 15 | Poweshiek County Estimated | 1.95 | -0.58 pts |
| 16 | Webster County Estimated | 1.91 | +0.41 pts |
| 17 | Sioux County Estimated | 1.84 | -0.53 pts |
| 18 | Linn County Estimated | 1.71 | -0.17 pts |
| 19 | Scott County Estimated | 1.58 | -0.35 pts |
| 20 | Woodbury County Estimated | 1.57 | -0.45 pts |
| 21 | Mahaska County Estimated | 1.47 | -0.22 pts |
| 22 | Decatur County Estimated | 1.47 | +0.37 pts |
| 23 | Bremer County Estimated | 1.29 | -0.25 pts |
| 24 | Osceola County Estimated | 1.29 | +0.01 pts |
| 25 | Floyd County Estimated | 1.25 | +1.32 pts |
| 26 | Plymouth County Estimated | 1.2 | -0.4 pts |
| 27 | Clarke County Estimated | 1.2 | +0.87 pts |
| 28 | Ida County Estimated | 1.15 | +0.86 pts |
| 29 | Fayette County Estimated | 1.14 | -0.38 pts |
| 30 | Taylor County Estimated | 1.13 | -1.45 pts |
| 31 | Wright County Estimated | 1.09 | -0.15 pts |
| 32 | Chickasaw County Estimated | 1.07 | +0.33 pts |
| 33 | Henry County Estimated | 1.06 | -0.25 pts |
| 34 | Dubuque County Estimated | 0.99 | -0.1 pts |
| 35 | Clinton County Estimated | 0.96 | +0.13 pts |
| 36 | Humboldt County Estimated | 0.94 | +0.32 pts |
| 37 | Jones County Estimated | 0.88 | -1.02 pts |
| 38 | Winnebago County Estimated | 0.85 | +0.66 pts |
| 39 | Emmet County Estimated | 0.82 | +0.41 pts |
| 40 | Ringgold County Estimated | 0.8 | +0.4 pts |
| 41 | Page County Estimated | 0.78 | -0.26 pts |
| 42 | Pocahontas County Estimated | 0.71 | +0.43 pts |
| 43 | Des Moines County Estimated | 0.7 | -0.09 pts |
| 44 | Tama County Estimated | 0.7 | +0.46 pts |
| 45 | Cerro Gordo County Estimated | 0.6 | -0.16 pts |
| 46 | Hamilton County Estimated | 0.59 | -0.72 pts |
| 47 | Washington County Estimated | 0.59 | -0.32 pts |
| 48 | Keokuk County Estimated | 0.59 | +0.1 pts |
| 49 | Winneshiek County Estimated | 0.58 | +0.29 pts |
| 50 | Franklin County Estimated | 0.58 | -0.47 pts |
| 51 | Hardin County Estimated | 0.58 | -0.23 pts |
| 52 | Union County Estimated | 0.56 | -0.63 pts |
| 53 | Clay County Estimated | 0.55 | +0.24 pts |
| 54 | Butler County Estimated | 0.54 | -0.4 pts |
| 55 | Kossuth County Estimated | 0.53 | 0 pts |
| 56 | Delaware County Estimated | 0.52 | -0.34 pts |
| 57 | Madison County Estimated | 0.51 | -0.58 pts |
| 58 | Calhoun County Estimated | 0.51 | 0 pts |
| 59 | Pottawattamie County Estimated | 0.48 | -0.38 pts |
| 60 | Mills County Estimated | 0.47 | +0.61 pts |
| 61 | Guthrie County Estimated | 0.47 | -0.19 pts |
| 62 | Clayton County Estimated | 0.45 | -0.06 pts |
| 63 | Fremont County Estimated | 0.43 | +0.15 pts |
| 64 | Cherokee County Estimated | 0.43 | -0.42 pts |
| 65 | O'Brien County Estimated | 0.43 | -0.21 pts |
| 66 | Buchanan County Estimated | 0.43 | +0.09 pts |
| 67 | Adair County Estimated | 0.41 | +0.41 pts |
| 68 | Hancock County Estimated | 0.36 | -0.18 pts |
| 69 | Dickinson County Estimated | 0.35 | -0.3 pts |
| 70 | Benton County Estimated | 0.35 | +0.16 pts |
| 71 | Appanoose County Estimated | 0.32 | -0.24 pts |
| 72 | Carroll County Estimated | 0.29 | +0.05 pts |
| 73 | Montgomery County Estimated | 0.29 | -0.28 pts |
| 74 | Cedar County Estimated | 0.27 | -0.49 pts |
| 75 | Monroe County Estimated | 0.25 | -0.38 pts |
| 76 | Jasper County Estimated | 0.24 | +0.27 pts |
| 77 | Marion County Estimated | 0.21 | -0.33 pts |
| 78 | Warren County Estimated | 0.21 | -0.02 pts |
| 79 | Audubon County Estimated | 0.17 | 0 pts |
| 80 | Cass County Estimated | 0.15 | +0.15 pts |
| 81 | Worth County Estimated | 0.13 | -0.13 pts |
| 82 | Greene County Estimated | 0.11 | +0.11 pts |
| 83 | Mitchell County Estimated | 0.09 | -0.28 pts |
| 84 | Lyon County Estimated | 0.09 | -0 pts |
| 85 | Jackson County Estimated | 0.05 | -0.1 pts |
| 86 | Lee County Estimated | 0.03 | -0.09 pts |
| 87 | Adams County Estimated | 0 | 0 pts |
| 87 | Davis County Estimated | 0 | 0 pts |
| 87 | Grundy County Estimated | 0 | 0 pts |
| 87 | Harrison County Estimated | 0 | 0 pts |
| 87 | Howard County Estimated | 0 | +0.11 pts |
| 87 | Lucas County Estimated | 0 | 0 pts |
| 87 | Sac County Estimated | 0 | 0 pts |
| 87 | Shelby County Estimated | 0 | -1.09 pts |
| 87 | Van Buren County Estimated | 0 | 0 pts |
| 96 | Monona County Estimated | -0.11 | -0.45 pts |
| 97 | Iowa County Estimated | -0.12 | -0.12 pts |
| 98 | Wayne County Estimated | -0.16 | -0.16 pts |
| 99 | Boone County Estimated | -0.19 | -0.04 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, 2015) [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, 2015. 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=2015. 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, 2015. 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=2015.
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, 2015 [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=2015 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_iowa_by_2015,
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, 2015}},
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=2015. 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, 2015
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=2015
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/iowa-counties?period=2015.
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 12.43 per 1,000 inhabitants in 2015, according to the U.S. Census Bureau.
Which county has the lowest net international migration rate, July to June?
Boone County, with -0.19 per 1,000 inhabitants in 2015.
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.