Counties in Iowa by net domestic migration, July to June
Dallas County had the highest net domestic migration, July to June of 99 counties in 2021, at 2,913. Linn County had the lowest, at -1,701. The median was 5 and the figure for Iowa was 2,294. Source: the U.S. Census Bureau.
Top 40 counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | Dallas County Estimated | 2,913 | +22% |
| 2 | Polk County Estimated | 1,846 | +697.4% |
| 3 | Warren County Estimated | 882 | +47.5% |
| 4 | Johnson County Estimated | 668 | +233.3% |
| 5 | Story County Estimated | 477 | +1,263.4% |
| 6 | Webster County Estimated | 284 | +402.1% |
| 7 | Jones County Estimated | 233 | +7,666.7% |
| 8 | Benton County Estimated | 205 | +227.3% |
| 9 | Harrison County Estimated | 201 | +379.2% |
| 10 | Dickinson County Estimated | 154 | -44.6% |
| 11 | Madison County Estimated | 150 | -34.2% |
| 12 | Bremer County Estimated | 139 | +101.4% |
| 12 | Clinton County Estimated | 139 | +172.4% |
| 14 | Boone County Estimated | 138 | +1,161.5% |
| 15 | Clay County Estimated | 133 | +208.1% |
| 16 | Lucas County Estimated | 105 | +318.8% |
| 17 | Shelby County Estimated | 100 | +385.7% |
| 18 | Page County Estimated | 90 | +3,100% |
| 19 | Delaware County Estimated | 81 | +165.3% |
| 20 | Jasper County Estimated | 75 | +320.6% |
| 21 | Mills County Estimated | 74 | +121.5% |
| 22 | Butler County Estimated | 73 | +292.1% |
| 23 | Adair County Estimated | 71 | +254.3% |
| 24 | Decatur County Estimated | 69 | +169.7% |
| 25 | Clayton County Estimated | 67 | +144.7% |
| 25 | Lyon County Estimated | 67 | +154% |
| 27 | Montgomery County Estimated | 66 | +22.2% |
| 28 | Appanoose County Estimated | 64 | +190.1% |
| 29 | Humboldt County Estimated | 58 | +441.2% |
| 30 | Grundy County Estimated | 54 | +2,600% |
| 31 | Calhoun County Estimated | 53 | +148.2% |
| 32 | Carroll County Estimated | 50 | +126.2% |
| 33 | Marion County Estimated | 48 | +152.2% |
| 34 | Cass County Estimated | 43 | +43.3% |
| 34 | Fremont County Estimated | 43 | +127.4% |
| 36 | Ringgold County Estimated | 41 | +183.7% |
| 37 | Henry County Estimated | 40 | +128.2% |
| 38 | Buchanan County Estimated | 37 | -43.9% |
| 38 | Van Buren County Estimated | 37 | +37% |
| 38 | Winnebago County Estimated | 37 | +166.1% |
| 41 | Emmet County Estimated | 31 | +124% |
| 42 | Jefferson County Estimated | 29 | -51.7% |
| 43 | Monroe County Estimated | 28 | -65.4% |
| 44 | Clarke County Estimated | 25 | +132.1% |
| 44 | Taylor County Estimated | 25 | +123.6% |
| 46 | Guthrie County Estimated | 20 | -9.1% |
| 47 | Wayne County Estimated | 16 | +300% |
| 48 | Pocahontas County Estimated | 11 | +191.7% |
| 49 | Hardin County Estimated | 10 | +105.6% |
| 50 | Poweshiek County Estimated | 5 | +110.6% |
| 51 | Howard County Estimated | 4 | -88.9% |
| 51 | Sac County Estimated | 4 | +106.8% |
| 53 | Greene County Estimated | 3 | +104.5% |
| 54 | Jackson County Estimated | 1 | +100.7% |
| 55 | Ida County Estimated | -1 | -102% |
| 56 | Plymouth County Estimated | -4 | +87.5% |
| 57 | Audubon County Estimated | -6 | -250% |
| 58 | Mitchell County Estimated | -7 | -108.7% |
| 59 | Osceola County Estimated | -9 | -129% |
| 60 | Cedar County Estimated | -17 | +52.8% |
| 61 | Iowa County Estimated | -27 | -162.8% |
| 62 | Franklin County Estimated | -28 | +74.8% |
| 63 | Davis County Estimated | -30 | +6.3% |
| 64 | Keokuk County Estimated | -33 | +68.6% |
| 65 | Worth County Estimated | -39 | +37.1% |
| 66 | Union County Estimated | -42 | +31.1% |
| 67 | Palo Alto County Estimated | -46 | -100% |
| 68 | Hancock County Estimated | -55 | +64.3% |
| 69 | Fayette County Estimated | -56 | +81.2% |
| 70 | O'Brien County Estimated | -58 | +40.8% |
| 71 | Adams County Estimated | -59 | -391.7% |
| 72 | Monona County Estimated | -61 | -310.3% |
| 73 | Chickasaw County Estimated | -65 | +52.9% |
| 74 | Cherokee County Estimated | -72 | -1,300% |
| 75 | Washington County Estimated | -76 | +39.7% |
| 76 | Wapello County Estimated | -77 | +77.1% |
| 77 | Floyd County Estimated | -80 | +55.8% |
| 78 | Louisa County Estimated | -85 | +8.6% |
| 78 | Wright County Estimated | -85 | +39.3% |
| 80 | Hamilton County Estimated | -92 | -5.7% |
| 81 | Allamakee County Estimated | -96 | -174.3% |
| 82 | Winneshiek County Estimated | -108 | +16.9% |
| 83 | Cerro Gordo County Estimated | -109 | +66.7% |
| 84 | Sioux County Estimated | -133 | +31.8% |
| 85 | Lee County Estimated | -146 | -403.4% |
| 86 | Mahaska County Estimated | -162 | -60.4% |
| 87 | Tama County Estimated | -168 | -17.5% |
| 88 | Pottawattamie County Estimated | -170 | +3.4% |
| 89 | Buena Vista County Estimated | -188 | -27% |
| 90 | Kossuth County Estimated | -211 | -137.1% |
| 91 | Marshall County Estimated | -239 | -77% |
| 92 | Des Moines County Estimated | -242 | +27.1% |
| 93 | Crawford County Estimated | -288 | -15.2% |
| 94 | Muscatine County Estimated | -423 | -16.9% |
| 95 | Scott County Estimated | -479 | +45.8% |
| 96 | Woodbury County Estimated | -548 | +15.8% |
| 97 | Dubuque County Estimated | -572 | -188.9% |
| 98 | Black Hawk County Estimated | -830 | +7.3% |
| 99 | Linn County Estimated | -1,701 | -222.2% |
Other periods
About this ranking
Estimated moves into a US state or county from elsewhere in the United States minus moves out to the rest of the country, from July 1 of the previous year through June 30 of the reported year. A negative value means more people left than arrived.
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, 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, 2021) [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, 2021. 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=2021. 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, 2021. 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=2021.
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, 2021 [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=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_iowa_by_2021,
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, 2021}},
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=2021. 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, 2021
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=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/iowa-counties?period=2021.
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?
Dallas County, with 2,913 in 2021, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration, July to June?
Linn County, with -1,701 in 2021.
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.