Counties in Montana by net domestic migration rate, July to June
Mineral County had the highest net domestic migration rate, July to June of 56 counties in 2021, at 74.43 per 1,000 inhabitants. Rosebud County had the lowest, at -23.44 per 1,000 inhabitants. The median was 13.07 per 1,000 inhabitants and the figure for Montana was 18.87 per 1,000 inhabitants. Source: the U.S. Census Bureau.
All counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | Mineral County Estimated | 74.43 | +43.2 pts |
| 2 | Broadwater County Estimated | 69.91 | +31.49 pts |
| 3 | Sanders County Estimated | 51.29 | +29.55 pts |
| 4 | Lincoln County Estimated | 51.08 | +33.68 pts |
| 5 | Ravalli County Estimated | 43.81 | +22.12 pts |
| 6 | Musselshell County Estimated | 43.48 | +28.21 pts |
| 7 | Petroleum County Estimated | 43.05 | +29.01 pts |
| 8 | Carbon County Estimated | 40.26 | +19.63 pts |
| 9 | Flathead County Estimated | 38.07 | +20.51 pts |
| 10 | Madison County Estimated | 37.7 | +15.79 pts |
| 11 | Garfield County Estimated | 34.51 | +40.02 pts |
| 12 | Jefferson County Estimated | 33.41 | +15.42 pts |
| 13 | Lake County Estimated | 29.41 | +14.63 pts |
| 14 | Meagher County Estimated | 26.24 | +31.69 pts |
| 15 | Gallatin County Estimated | 24.26 | +9.87 pts |
| 16 | Pondera County Estimated | 23.52 | +36.75 pts |
| 17 | Beaverhead County Estimated | 22.19 | +19.56 pts |
| 18 | Park County Estimated | 22.09 | +11.97 pts |
| 19 | Daniels County Estimated | 20.5 | +23.55 pts |
| 20 | Lewis and Clark County Estimated | 19.22 | +10.7 pts |
| 21 | Granite County Estimated | 18.9 | +18.9 pts |
| 22 | Sweet Grass County Estimated | 18.7 | +24.1 pts |
| 23 | Prairie County Estimated | 18.24 | +24.81 pts |
| 24 | Fergus County Estimated | 18.19 | +9.42 pts |
| 25 | Powell County Estimated | 17.05 | +16.75 pts |
| 26 | Deer Lodge County Estimated | 16.89 | +10.91 pts |
| 27 | Treasure County Estimated | 14.4 | +37.39 pts |
| 28 | Yellowstone County Estimated | 13.33 | +5.2 pts |
| 29 | Wibaux County Estimated | 12.82 | +26.56 pts |
| 30 | Silver Bow County Estimated | 12.25 | +3.66 pts |
| 31 | Custer County Estimated | 11.84 | +14.13 pts |
| 32 | Powder River County Estimated | 11.75 | +17.09 pts |
| 33 | Sheridan County Estimated | 11.52 | +24.9 pts |
| 34 | Missoula County Estimated | 11.42 | +1.14 pts |
| 35 | Carter County Estimated | 10.63 | +23.54 pts |
| 36 | Judith Basin County Estimated | 9.83 | +17.32 pts |
| 37 | Chouteau County Estimated | 8.1 | +1.78 pts |
| 38 | Golden Valley County Estimated | 7.31 | +10.94 pts |
| 39 | Stillwater County Estimated | 6.99 | -14.17 pts |
| 40 | Toole County Estimated | 6.43 | +12.39 pts |
| 41 | Teton County Estimated | 6.22 | -7 pts |
| 42 | Phillips County Estimated | 3.33 | +11.96 pts |
| 43 | Valley County Estimated | 3.3 | +11.44 pts |
| 44 | Cascade County Estimated | 2.82 | +6.09 pts |
| 45 | Roosevelt County Estimated | 2.22 | +11.04 pts |
| 46 | Glacier County Estimated | -0.15 | +12.09 pts |
| 47 | Dawson County Estimated | -1.69 | +8.08 pts |
| 48 | Blaine County Estimated | -2.86 | +22.91 pts |
| 49 | Hill County Estimated | -7.4 | +8.55 pts |
| 50 | Wheatland County Estimated | -9.23 | -35.99 pts |
| 51 | Fallon County Estimated | -9.93 | +8.65 pts |
| 52 | Big Horn County Estimated | -9.93 | +9.75 pts |
| 53 | McCone County Estimated | -11.62 | -13.44 pts |
| 54 | Liberty County Estimated | -13.37 | -5.38 pts |
| 55 | Richland County Estimated | -20.39 | -23.67 pts |
| 56 | Rosebud County Estimated | -23.44 | -7.7 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 Montana by net domestic migration rate, 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 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 Montana by net domestic migration rate, 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-rate-july-june/montana-counties?period=2021. 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 Montana by net domestic migration rate, 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-rate-july-june/montana-counties?period=2021.
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 Montana by net domestic migration rate, 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-rate-july-june/montana-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_montana_by_2021,
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 Montana by net domestic migration rate, 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-rate-july-june/montana-counties?period=2021. 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 Montana by net domestic migration rate, 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-rate-july-june/montana-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-rate-july-june/montana-counties?period=2021.
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 Montana 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":"Montana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_domestic_migration_rate_july_june&level=province&within=Montana&limit=10Questions
Which county has the highest net domestic migration rate, July to June?
Mineral County, with 74.43 per 1,000 inhabitants in 2021, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration rate, July to June?
Rosebud County, with -23.44 per 1,000 inhabitants 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 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.