Counties in Iowa by net domestic migration rate, July to June
Dallas County had the highest net domestic migration rate, July to June of 99 counties in 2015, at 22.56 per 1,000 inhabitants. Adams County had the lowest, at -27.01 per 1,000 inhabitants. The median was -4.34 per 1,000 inhabitants and the figure for Iowa was -1.17 per 1,000 inhabitants. Source: the U.S. Census Bureau.
Map of counties, 2015
- Under -7.1
- -7.1 to -4.2
- -4.2 to 0
- 0 to 1.6
- 1.6 to 5.1
- 5.1 and over
Top 40 counties, 2015
Full ranking
| Rank | Counties | 2015 | Change on 2014 |
|---|---|---|---|
| 1 | Dallas County Estimated | 22.56 | +0.9 pts |
| 2 | Warren County Estimated | 10.03 | +2.93 pts |
| 3 | Dickinson County Estimated | 9.92 | +9.45 pts |
| 4 | Taylor County Estimated | 8.54 | +19.35 pts |
| 5 | Ringgold County Estimated | 8.25 | +8.05 pts |
| 6 | Boone County Estimated | 6.25 | +4.62 pts |
| 7 | Winnebago County Estimated | 5.48 | -3.19 pts |
| 8 | Mills County Estimated | 5.26 | +16.86 pts |
| 9 | Madison County Estimated | 4.98 | -1.13 pts |
| 10 | Polk County Estimated | 4.41 | -2.61 pts |
| 11 | Linn County Estimated | 3.18 | +2.12 pts |
| 12 | Grundy County Estimated | 2.9 | -0.98 pts |
| 13 | Winneshiek County Estimated | 2.51 | +9.29 pts |
| 14 | Palo Alto County Estimated | 2.3 | +7 pts |
| 15 | Washington County Estimated | 1.86 | +1.67 pts |
| 16 | Johnson County Estimated | 1.62 | -1.14 pts |
| 17 | Cass County Estimated | 1.42 | +9.88 pts |
| 18 | Monona County Estimated | 1.24 | +6.37 pts |
| 19 | Page County Estimated | 1.03 | +3.48 pts |
| 20 | Bremer County Estimated | 0.28 | +0.41 pts |
| 21 | Dubuque County Estimated | 0.22 | -1.1 pts |
| 22 | Monroe County Estimated | 0.13 | -1 pts |
| 23 | Clay County Estimated | 0.12 | -2.92 pts |
| 24 | Pottawattamie County Estimated | 0.03 | -0.79 pts |
| 25 | Mitchell County Estimated | -0.56 | -2.72 pts |
| 26 | Lucas County Estimated | -0.58 | +5.54 pts |
| 27 | Guthrie County Estimated | -0.94 | -3.28 pts |
| 28 | Lyon County Estimated | -1.02 | +4.96 pts |
| 29 | Ida County Estimated | -1.15 | +13.95 pts |
| 30 | Clarke County Estimated | -1.2 | +5.31 pts |
| 31 | Cedar County Estimated | -1.26 | -3.18 pts |
| 32 | Henry County Estimated | -1.46 | +9.72 pts |
| 33 | Jackson County Estimated | -1.55 | +2.82 pts |
| 34 | Wapello County Estimated | -1.81 | +4.31 pts |
| 35 | Webster County Estimated | -1.81 | +6.39 pts |
| 36 | Hancock County Estimated | -1.81 | +4.68 pts |
| 37 | Wayne County Estimated | -1.88 | +1.41 pts |
| 38 | Hamilton County Estimated | -2.3 | +9.54 pts |
| 39 | Scott County Estimated | -2.34 | -2.19 pts |
| 40 | Calhoun County Estimated | -2.34 | -0.42 pts |
| 41 | Clayton County Estimated | -2.48 | +0.61 pts |
| 42 | Story County Estimated | -2.62 | -8.51 pts |
| 43 | Hardin County Estimated | -2.95 | -0.64 pts |
| 44 | Plymouth County Estimated | -3.01 | +1.36 pts |
| 45 | Kossuth County Estimated | -3.03 | +1.82 pts |
| 46 | Iowa County Estimated | -3.19 | -4.91 pts |
| 47 | Delaware County Estimated | -3.22 | +4.58 pts |
| 48 | Butler County Estimated | -3.42 | -2.95 pts |
| 49 | Benton County Estimated | -3.98 | +1.86 pts |
| 50 | Muscatine County Estimated | -4.34 | +1.47 pts |
| 51 | Shelby County Estimated | -4.39 | -5.06 pts |
| 52 | Black Hawk County Estimated | -4.41 | -1.02 pts |
| 53 | Lee County Estimated | -4.43 | -0.16 pts |
| 54 | Cerro Gordo County Estimated | -4.64 | +2.99 pts |
| 55 | Jasper County Estimated | -4.64 | -8.26 pts |
| 56 | Sac County Estimated | -4.8 | -8.39 pts |
| 57 | Appanoose County Estimated | -4.83 | -7.35 pts |
| 58 | Buchanan County Estimated | -4.92 | -6.44 pts |
| 59 | Woodbury County Estimated | -5 | +3.13 pts |
| 60 | Louisa County Estimated | -5.06 | +11.31 pts |
| 61 | Carroll County Estimated | -5.28 | -2.21 pts |
| 62 | Marion County Estimated | -5.39 | -11.09 pts |
| 63 | Worth County Estimated | -5.44 | -14.62 pts |
| 64 | Davis County Estimated | -5.48 | +1.83 pts |
| 65 | Fayette County Estimated | -5.49 | +3.92 pts |
| 66 | Wright County Estimated | -5.9 | +0.82 pts |
| 67 | Sioux County Estimated | -5.94 | +0.14 pts |
| 68 | Des Moines County Estimated | -5.95 | +2.32 pts |
| 69 | Harrison County Estimated | -6.05 | +1.84 pts |
| 70 | Howard County Estimated | -6.1 | +3.68 pts |
| 71 | Floyd County Estimated | -6.58 | -5.39 pts |
| 72 | Mahaska County Estimated | -6.73 | -4.63 pts |
| 73 | Tama County Estimated | -6.95 | +2.09 pts |
| 74 | O'Brien County Estimated | -7.08 | -7.36 pts |
| 75 | Jones County Estimated | -7.27 | -7.47 pts |
| 76 | Humboldt County Estimated | -7.81 | -4.6 pts |
| 77 | Chickasaw County Estimated | -8.36 | -4.77 pts |
| 78 | Jefferson County Estimated | -8.46 | -1.34 pts |
| 79 | Clinton County Estimated | -8.46 | +0.5 pts |
| 80 | Audubon County Estimated | -9.76 | +3.14 pts |
| 81 | Keokuk County Estimated | -10.17 | -2.8 pts |
| 82 | Van Buren County Estimated | -10.89 | -6.31 pts |
| 83 | Decatur County Estimated | -11.49 | -10.64 pts |
| 84 | Marshall County Estimated | -12.19 | -0.1 pts |
| 85 | Crawford County Estimated | -12.74 | +5.63 pts |
| 86 | Emmet County Estimated | -12.8 | -6.61 pts |
| 87 | Poweshiek County Estimated | -13.13 | -14.21 pts |
| 88 | Franklin County Estimated | -13.2 | -2.79 pts |
| 89 | Union County Estimated | -13.57 | -15.47 pts |
| 90 | Osceola County Estimated | -14.2 | -10.19 pts |
| 91 | Fremont County Estimated | -14.2 | -10.23 pts |
| 92 | Allamakee County Estimated | -16.82 | -13.41 pts |
| 93 | Pocahontas County Estimated | -18.2 | -16.79 pts |
| 94 | Greene County Estimated | -18.92 | -17.94 pts |
| 95 | Montgomery County Estimated | -19.67 | -20.92 pts |
| 96 | Buena Vista County Estimated | -21.47 | -8.38 pts |
| 97 | Adair County Estimated | -23.02 | -24.65 pts |
| 98 | Cherokee County Estimated | -24.99 | -19.24 pts |
| 99 | Adams County Estimated | -27.01 | -21.35 pts |
Other periods
About this ranking
Net domestic migration into a US state or county 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.
Sums to zero for the United States 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 rate per 1,000 residents, 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 rate per 1,000 residents, 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 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 domestic migration rate per 1,000 residents, 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 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-domestic-migration-rate-july-june/iowa-counties?period=2015. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net domestic migration rate per 1,000 residents, 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 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-domestic-migration-rate-july-june/iowa-counties?period=2015.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net domestic migration rate per 1,000 residents, 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 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-domestic-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 domestic migration rate per 1,000 residents, 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 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-domestic-migration-rate-july-june/iowa-counties?period=2015. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration rate per 1,000 residents, 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 rate per 1,000 residents, 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 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-domestic-migration-rate-july-june/iowa-counties?period=2015
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-rate-july-june/iowa-counties?period=2015.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net domestic migration rate per 1,000 residents, 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 rate, July to June using official data, and cite the source.
rank_places {"indicator":"net_domestic_migration_rate_july_june","level":"province","within":"Iowa","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_domestic_migration_rate_july_june&level=province&within=Iowa&limit=10
Questions
Which county has the highest net domestic migration rate, July to June?
Dallas County, with 22.56 per 1,000 inhabitants in 2015, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration rate, July to June?
Adams County, with -27.01 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 domestic migration rate per 1,000 residents, 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.