Counties in Montana by net domestic migration, July to June, 2025
Flathead County had the highest net domestic migration, July to June of 56 counties in 2025, at 914. Big Horn County had the lowest, at -147. The median was 25 and the figure for Montana was 6,348. Source: the U.S. Census Bureau.
All counties, 2025
Full ranking
| Rank | Counties | 2025 | Change on 2024 |
|---|---|---|---|
| 1 | Flathead County Estimated | 914 | +12.7% |
| 2 | Yellowstone County Estimated | 868 | +41.6% |
| 3 | Missoula County Estimated | 765 | +27.9% |
| 4 | Ravalli County Estimated | 663 | +33.1% |
| 5 | Gallatin County Estimated | 545 | +28.5% |
| 6 | Cascade County Estimated | 346 | +11,633.3% |
| 7 | Lincoln County Estimated | 313 | -24.4% |
| 8 | Madison County Estimated | 283 | +10.1% |
| 9 | Lewis and Clark County Estimated | 265 | -7.7% |
| 10 | Richland County Estimated | 259 | +384.6% |
| 11 | Broadwater County Estimated | 214 | -7.8% |
| 12 | Sanders County Estimated | 210 | -3.2% |
| 13 | Silver Bow County Estimated | 159 | +71% |
| 14 | Jefferson County Estimated | 156 | -33.9% |
| 15 | Musselshell County Estimated | 144 | +92% |
| 16 | Lake County Estimated | 90 | -58.5% |
| 17 | Beaverhead County Estimated | 81 | -37.7% |
| 18 | Powell County Estimated | 74 | +68.2% |
| 19 | Teton County Estimated | 65 | +400% |
| 20 | Park County Estimated | 57 | -71.5% |
| 21 | Custer County Estimated | 49 | +228.9% |
| 22 | Toole County Estimated | 47 | +104.3% |
| 23 | Judith Basin County Estimated | 44 | +340% |
| 23 | Meagher County Estimated | 44 | +100% |
| 25 | Wheatland County Estimated | 39 | +454.5% |
| 26 | Chouteau County Estimated | 36 | |
| 27 | Valley County Estimated | 33 | +294.1% |
| 28 | Granite County Estimated | 26 | -50.9% |
| 29 | Pondera County Estimated | 24 | +188.9% |
| 30 | Mineral County Estimated | 23 | -68.9% |
| 31 | Stillwater County Estimated | 22 | -89% |
| 32 | Phillips County Estimated | 17 | +148.6% |
| 32 | Powder River County Estimated | 17 | +142.9% |
| 34 | Prairie County Estimated | 10 | +400% |
| 35 | Petroleum County Estimated | 7 | +153.8% |
| 36 | Fergus County Estimated | 5 | -79.2% |
| 36 | Golden Valley County Estimated | 5 | +129.4% |
| 38 | Liberty County Estimated | 3 | +123.1% |
| 39 | Hill County Estimated | -1 | +99.2% |
| 39 | Roosevelt County Estimated | -1 | +99.4% |
| 41 | McCone County Estimated | -3 | -112.5% |
| 41 | Treasure County Estimated | -3 | +90.9% |
| 43 | Wibaux County Estimated | -10 | -140% |
| 44 | Fallon County Estimated | -15 | +72.7% |
| 45 | Blaine County Estimated | -19 | -733.3% |
| 46 | Deer Lodge County Estimated | -20 | -113.7% |
| 47 | Garfield County Estimated | -25 | +28.6% |
| 48 | Daniels County Estimated | -29 | -323.1% |
| 49 | Sheridan County Estimated | -32 | -540% |
| 50 | Carter County Estimated | -37 | -470% |
| 51 | Dawson County Estimated | -39 | +51.2% |
| 52 | Rosebud County Estimated | -40 | -217.6% |
| 53 | Carbon County Estimated | -47 | -162.7% |
| 54 | Glacier County Estimated | -49 | -28.9% |
| 55 | Sweet Grass County Estimated | -57 | -311.1% |
| 56 | Big Horn County Estimated | -147 | -129.7% |
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 Montana by net domestic migration, July to June, 2025) [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 Montana by net domestic migration, July to June, 2025. 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/montana-counties. 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 Montana by net domestic migration, July to June, 2025. 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/montana-counties.
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 Montana by net domestic migration, July to June, 2025 [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/montana-counties (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_montana_by_2025,
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 Montana by net domestic migration, July to June, 2025}},
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/montana-counties. 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 Montana by net domestic migration, July to June, 2025
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/montana-counties
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-july-june/montana-counties.
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
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Rank Counties in Montana 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":"Montana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_domestic_migration_july_june&level=province&within=Montana&limit=10Questions
Which county has the highest net domestic migration, July to June?
Flathead County, with 914 in 2025, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration, July to June?
Big Horn County, with -147 in 2025.
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.