Counties in Iowa by net domestic migration, July to June
Polk County had the highest net domestic migration, July to June of 99 counties in 2015, at 2,048. Black Hawk County had the lowest, at -589. The median was -57 and the figure for Iowa was -3,653. Source: the U.S. Census Bureau.
Map of counties, 2015
- Under -140
- -140 to -60
- -60 to 0
- 0 to 20
- 20 to 80
- 80 and over
Top 40 counties, 2015
Full ranking
| Rank | Counties | 2015 | Change on 2014 |
|---|---|---|---|
| 1 | Polk County Estimated | 2,048 | -36.2% |
| 2 | Dallas County Estimated | 1,787 | +8% |
| 3 | Linn County Estimated | 698 | +200.9% |
| 4 | Warren County Estimated | 483 | +42.9% |
| 5 | Johnson County Estimated | 233 | -40.4% |
| 6 | Dickinson County Estimated | 168 | +2,000% |
| 7 | Boone County Estimated | 165 | +283.7% |
| 8 | Madison County Estimated | 78 | -17.9% |
| 8 | Mills County Estimated | 78 | +145.3% |
| 10 | Winnebago County Estimated | 58 | -36.3% |
| 11 | Taylor County Estimated | 53 | +179.1% |
| 12 | Winneshiek County Estimated | 52 | +136.9% |
| 13 | Ringgold County Estimated | 41 | +4,000% |
| 13 | Washington County Estimated | 41 | +925% |
| 15 | Grundy County Estimated | 36 | -25% |
| 16 | Dubuque County Estimated | 21 | -83.5% |
| 16 | Palo Alto County Estimated | 21 | +148.8% |
| 18 | Cass County Estimated | 19 | +116.7% |
| 19 | Page County Estimated | 16 | +142.1% |
| 20 | Monona County Estimated | 11 | +123.9% |
| 21 | Bremer County Estimated | 7 | +333.3% |
| 22 | Pottawattamie County Estimated | 3 | -96.1% |
| 23 | Clay County Estimated | 2 | -96% |
| 24 | Monroe County Estimated | 1 | -88.9% |
| 25 | Lucas County Estimated | -5 | +90.6% |
| 26 | Mitchell County Estimated | -6 | -126.1% |
| 27 | Ida County Estimated | -8 | +92.5% |
| 28 | Guthrie County Estimated | -10 | -140% |
| 29 | Clarke County Estimated | -11 | +81.7% |
| 30 | Lyon County Estimated | -12 | +82.9% |
| 30 | Wayne County Estimated | -12 | +42.9% |
| 32 | Hancock County Estimated | -20 | +72.2% |
| 33 | Calhoun County Estimated | -23 | -21.1% |
| 33 | Cedar County Estimated | -23 | -165.7% |
| 35 | Henry County Estimated | -29 | +87% |
| 36 | Jackson County Estimated | -30 | +64.7% |
| 37 | Hamilton County Estimated | -35 | +80.7% |
| 38 | Worth County Estimated | -41 | -159.4% |
| 39 | Clayton County Estimated | -44 | +20% |
| 40 | Kossuth County Estimated | -46 | +37.8% |
| 41 | Davis County Estimated | -48 | +25% |
| 41 | Sac County Estimated | -48 | -233.3% |
| 43 | Butler County Estimated | -51 | -628.6% |
| 43 | Hardin County Estimated | -51 | -27.5% |
| 45 | Iowa County Estimated | -52 | -285.7% |
| 45 | Shelby County Estimated | -52 | -750% |
| 47 | Audubon County Estimated | -56 | +25.3% |
| 47 | Delaware County Estimated | -56 | +58.8% |
| 49 | Howard County Estimated | -57 | +38% |
| 49 | Louisa County Estimated | -57 | +69.2% |
| 51 | Appanoose County Estimated | -61 | -290.6% |
| 52 | Wapello County Estimated | -64 | +70.5% |
| 53 | Webster County Estimated | -67 | +78% |
| 54 | Humboldt County Estimated | -75 | -141.9% |
| 54 | Plymouth County Estimated | -75 | +31.2% |
| 56 | Wright County Estimated | -76 | +12.6% |
| 57 | Van Buren County Estimated | -80 | -135.3% |
| 58 | Harrison County Estimated | -86 | +23.9% |
| 59 | Osceola County Estimated | -88 | -252% |
| 60 | Decatur County Estimated | -94 | -1,242.9% |
| 61 | Fremont County Estimated | -99 | -253.6% |
| 61 | O'Brien County Estimated | -99 | -2,575% |
| 63 | Benton County Estimated | -102 | +32% |
| 63 | Chickasaw County Estimated | -102 | -131.8% |
| 65 | Adams County Estimated | -103 | -368.2% |
| 66 | Buchanan County Estimated | -104 | -425% |
| 66 | Keokuk County Estimated | -104 | -36.8% |
| 68 | Floyd County Estimated | -105 | -452.6% |
| 69 | Carroll County Estimated | -108 | -71.4% |
| 70 | Fayette County Estimated | -111 | +42.2% |
| 71 | Tama County Estimated | -120 | +23.6% |
| 72 | Emmet County Estimated | -125 | -104.9% |
| 73 | Pocahontas County Estimated | -128 | -1,180% |
| 74 | Franklin County Estimated | -137 | -25.7% |
| 75 | Jones County Estimated | -149 | -3,825% |
| 76 | Jefferson County Estimated | -151 | -19.8% |
| 76 | Mahaska County Estimated | -151 | -221.3% |
| 78 | Lee County Estimated | -155 | -3.3% |
| 79 | Adair County Estimated | -167 | -1,491.7% |
| 80 | Union County Estimated | -170 | -808.3% |
| 81 | Greene County Estimated | -171 | -1,800% |
| 81 | Jasper County Estimated | -171 | -228.6% |
| 83 | Marion County Estimated | -179 | -194.7% |
| 84 | Muscatine County Estimated | -187 | +25.2% |
| 85 | Cerro Gordo County Estimated | -200 | +39.6% |
| 86 | Montgomery County Estimated | -202 | -1,653.8% |
| 87 | Sioux County Estimated | -206 | +1.9% |
| 88 | Crawford County Estimated | -218 | +31.2% |
| 89 | Allamakee County Estimated | -235 | -389.6% |
| 90 | Des Moines County Estimated | -238 | +28.5% |
| 91 | Poweshiek County Estimated | -243 | -1,315% |
| 92 | Story County Estimated | -252 | -145.1% |
| 93 | Cherokee County Estimated | -291 | -327.9% |
| 94 | Scott County Estimated | -402 | -1,508% |
| 95 | Clinton County Estimated | -404 | +6.3% |
| 96 | Buena Vista County Estimated | -440 | -63% |
| 97 | Marshall County Estimated | -494 | 0% |
| 98 | Woodbury County Estimated | -512 | +38.5% |
| 99 | Black Hawk County Estimated | -589 | -30.6% |
Other periods
About this ranking
Estimated moves into an area from elsewhere in the same country minus moves out to the rest of the country, from July 1 of the previous year through June 30 of the reported year.
More on how it is measured
- United States: states and counties.
- Canada: provinces and territories, net interprovincial migration (Statistics Canada).
- United Kingdom: local authorities, counting moves between any two UK local authorities, including across the borders of England, Wales, Scotland and Northern Ireland (ONS internal migration).
- A negative value means more people left than arrived.
Sums to zero, or close to it, for each country as a whole, so there is no national value.
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 domestic migration, states and counties, 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 domestic migration, states and counties, 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 domestic migration, 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 domestic migration, states and counties, 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 domestic migration, 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-domestic-migration-july-june/iowa-counties?period=2015. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net domestic migration, states and counties, 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 domestic migration, 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-domestic-migration-july-june/iowa-counties?period=2015.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net domestic migration, states and counties, 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 domestic migration, 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-domestic-migration-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 domestic migration, states and counties, 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 domestic migration, 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-domestic-migration-july-june/iowa-counties?period=2015. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, 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 domestic migration, states and counties, 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 domestic migration, 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-domestic-migration-july-june/iowa-counties?period=2015
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/iowa-counties?period=2015.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, 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 domestic migration, July to June using official data, and cite the source.
rank_places {"indicator":"net_domestic_migration_july_june","level":"province","within":"Iowa","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_domestic_migration_july_june&level=province&within=Iowa&limit=10Questions
Which county has the highest net domestic migration, July to June?
Polk County, with 2,048 in 2015, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration, July to June?
Black Hawk County, with -589 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 domestic migration, states and counties, 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.