Counties in Montana by net domestic migration rate, July to June
Madison County had the highest net domestic migration rate, July to June of 56 counties in 2018, at 35.34 per 1,000 inhabitants. Prairie County had the lowest, at -29.73 per 1,000 inhabitants. The median was 0.78 per 1,000 inhabitants and the figure for Montana was 5.43 per 1,000 inhabitants. Source: the U.S. Census Bureau.
All counties, 2018
Full ranking
| Rank | Counties | 2018 | Change on 2017 |
|---|---|---|---|
| 1 | Madison County Estimated | 35.34 | +9.29 pts |
| 2 | Broadwater County Estimated | 21.9 | -4.24 pts |
| 3 | Powell County Estimated | 21.6 | +24.97 pts |
| 4 | Gallatin County Estimated | 19.92 | -7.97 pts |
| 5 | Mineral County Estimated | 18 | -15.45 pts |
| 6 | Ravalli County Estimated | 17.93 | -0.08 pts |
| 7 | Lincoln County Estimated | 16.53 | +0.96 pts |
| 8 | Flathead County Estimated | 16.3 | -3.87 pts |
| 9 | Jefferson County Estimated | 15.92 | +4.1 pts |
| 10 | Park County Estimated | 15.31 | -0.86 pts |
| 11 | Wibaux County Estimated | 12.7 | +35 pts |
| 12 | Wheatland County Estimated | 12.08 | +2.7 pts |
| 13 | Deer Lodge County Estimated | 10.83 | +1.27 pts |
| 14 | Golden Valley County Estimated | 9.74 | +2.37 pts |
| 15 | Lewis and Clark County Estimated | 9.33 | -2.73 pts |
| 16 | Stillwater County Estimated | 8.78 | +3.45 pts |
| 17 | Sanders County Estimated | 8.7 | -13.57 pts |
| 18 | Granite County Estimated | 8.66 | -14.61 pts |
| 19 | Liberty County Estimated | 8.24 | +13.62 pts |
| 20 | Sweet Grass County Estimated | 8.14 | -8.07 pts |
| 21 | Petroleum County Estimated | 7.77 | -40.08 pts |
| 22 | Carter County Estimated | 5.73 | -31.82 pts |
| 23 | Musselshell County Estimated | 5.19 | +3.68 pts |
| 24 | Missoula County Estimated | 4.78 | -4.45 pts |
| 25 | Judith Basin County Estimated | 2.57 | +0.51 pts |
| 26 | Yellowstone County Estimated | 2.47 | -2.68 pts |
| 27 | Lake County Estimated | 1.58 | -14.22 pts |
| 28 | Chouteau County Estimated | 1.57 | +7.64 pts |
| 29 | Glacier County Estimated | 0 | +7.87 pts |
| 29 | Meagher County Estimated | 0 | -4.86 pts |
| 31 | Carbon County Estimated | -0.09 | -20.12 pts |
| 32 | Blaine County Estimated | -0.3 | +1.19 pts |
| 33 | Cascade County Estimated | -1.58 | -0.11 pts |
| 34 | Valley County Estimated | -1.75 | +16.03 pts |
| 35 | Teton County Estimated | -1.96 | -11.21 pts |
| 36 | Silver Bow County Estimated | -2.36 | -4.88 pts |
| 37 | Beaverhead County Estimated | -3.4 | -1.17 pts |
| 38 | Pondera County Estimated | -4.04 | +10.49 pts |
| 39 | Daniels County Estimated | -4.67 | -4.09 pts |
| 40 | Treasure County Estimated | -7.49 | +7.37 pts |
| 41 | Toole County Estimated | -11.13 | +8.39 pts |
| 42 | Custer County Estimated | -12.27 | -2.77 pts |
| 43 | Garfield County Estimated | -12.59 | +4.5 pts |
| 44 | Phillips County Estimated | -12.98 | -10.07 pts |
| 45 | Powder River County Estimated | -13.81 | -11.52 pts |
| 46 | Fergus County Estimated | -15.83 | -15.74 pts |
| 47 | Roosevelt County Estimated | -15.92 | +0.79 pts |
| 48 | Richland County Estimated | -16.68 | +21.55 pts |
| 49 | Big Horn County Estimated | -17.34 | -7.67 pts |
| 50 | Hill County Estimated | -17.49 | -8.86 pts |
| 51 | McCone County Estimated | -20.9 | -5.71 pts |
| 52 | Sheridan County Estimated | -24.27 | +13.35 pts |
| 53 | Rosebud County Estimated | -27.47 | -18.28 pts |
| 54 | Fallon County Estimated | -29.64 | +1.78 pts |
| 55 | Dawson County Estimated | -29.69 | +5.06 pts |
| 56 | Prairie County Estimated | -29.73 | +20.81 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, 2018) [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, 2018. 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=2018. 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, 2018. 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=2018.
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, 2018 [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=2018 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_montana_by_2018,
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, 2018}},
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=2018. 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, 2018
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=2018
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-domestic-migration-rate-july-june/montana-counties?period=2018.
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?
Madison County, with 35.34 per 1,000 inhabitants in 2018, according to the U.S. Census Bureau.
Which county has the lowest net domestic migration rate, July to June?
Prairie County, with -29.73 per 1,000 inhabitants in 2018.
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.