Counties in Montana by net international migration rate, July to June

Madison County had the highest net international migration rate, July to June of 56 counties in 2021, at 2.95 per 1,000 inhabitants. Big Horn County had the lowest, at -0.08 per 1,000 inhabitants. The median was 0.2 per 1,000 inhabitants and the figure for Montana was 0.65 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Highest2.95Madison County

Lowest-0.08Big Horn County

Median0.256 counties

Montana0.65History

All counties, 2021

per 1,000 inhabitants. Source: U.S. Census Bureau, Population Estimates Program: net international migration rate per 1,000 residents, 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.

Full ranking

Rank	Counties	2021 per 1,000 inhabitants	Change on 2020
1	Madison County Estimated	2.95	+0.58 pts
2	Silver Bow County Estimated	2.01	+0.32 pts
3	Toole County Estimated	1.61	+1.61 pts
4	Gallatin County Estimated	1.08	-0.85 pts
5	Carbon County Estimated	1.03	+0.38 pts
6	Pondera County Estimated	1.01	-0.37 pts
7	Fallon County Estimated	0.99	+0.29 pts
8	Lincoln County Estimated	0.99	-0.44 pts
9	Deer Lodge County Estimated	0.95	+0.95 pts
10	Valley County Estimated	0.93	+0.52 pts
11	Flathead County Estimated	0.89	+0.61 pts
12	Richland County Estimated	0.88	+1.06 pts
13	Ravalli County Estimated	0.71	+0.08 pts
14	Missoula County Estimated	0.68	-1.28 pts
15	Yellowstone County Estimated	0.64	-0.23 pts
16	Mineral County Estimated	0.64	+0.86 pts
17	Rosebud County Estimated	0.61	-0.63 pts
18	Granite County Estimated	0.6	+0.3 pts
19	Lake County Estimated	0.54	-0.08 pts
20	Lewis and Clark County Estimated	0.53	-0.07 pts
21	Park County Estimated	0.4	+0.16 pts
22	Roosevelt County Estimated	0.37	-0.36 pts
23	Dawson County Estimated	0.34	+0.1 pts
24	Teton County Estimated	0.32	-1.78 pts
25	Sheridan County Estimated	0.28	+0.28 pts
26	Sweet Grass County Estimated	0.27	+0.27 pts
27	Hill County Estimated	0.25	-0.73 pts
28	Sanders County Estimated	0.24	+0.15 pts
29	Fergus County Estimated	0.17	-0.82 pts
30	Chouteau County Estimated	0.17	+0.17 pts
31	Broadwater County Estimated	0.14	+0.14 pts
32	Custer County Estimated	0.08	-0.36 pts
33	Cascade County Estimated	0.02	-0.44 pts
34	Beaverhead County Estimated	0	-1.06 pts
34	Blaine County Estimated	0	-0.15 pts
34	Carter County Estimated	0	0 pts
34	Daniels County Estimated	0	0 pts
34	Garfield County Estimated	0	0 pts
34	Glacier County Estimated	0	-0.37 pts
34	Golden Valley County Estimated	0	0 pts
34	Jefferson County Estimated	0	0 pts
34	Judith Basin County Estimated	0	0 pts
34	Liberty County Estimated	0	0 pts
34	McCone County Estimated	0	0 pts
34	Meagher County Estimated	0	-1.63 pts
34	Musselshell County Estimated	0	0 pts
34	Petroleum County Estimated	0	0 pts
34	Phillips County Estimated	0	0 pts
34	Powder River County Estimated	0	0 pts
34	Powell County Estimated	0	-0.15 pts
34	Prairie County Estimated	0	0 pts
34	Stillwater County Estimated	0	-0.82 pts
34	Treasure County Estimated	0	0 pts
34	Wheatland County Estimated	0	0 pts
34	Wibaux County Estimated	0	0 pts
56	Big Horn County Estimated	-0.08	-0.61 pts

Other periods

About this ranking

Net international migration 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.

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 international migration rate per 1,000 residents, 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

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program: net international migration rate per 1,000 residents, 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 international 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 international migration rate per 1,000 residents, 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 international 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-international-migration-rate-july-june/montana-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program: net international migration rate per 1,000 residents, 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 international 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-international-migration-rate-july-june/montana-counties?period=2021.

Harvard

U.S. Census Bureau (2026) Population Estimates Program: net international migration rate per 1,000 residents, 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 international 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-international-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 international migration rate per 1,000 residents, 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 international 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-international-migration-rate-july-june/montana-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration rate per 1,000 residents, 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 international migration rate per 1,000 residents, 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 international 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-international-migration-rate-july-june/montana-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/montana-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration rate per 1,000 residents, 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  -

Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Embed code

<iframe src="https://invokely.ai/embed/rankings/net-international-migration-rate-july-june/montana-counties?period=2021" width="760" height="500" title="Counties in Montana by net international migration rate, July to June, 2021, chart from Invokely" loading="lazy" style="border:0;width:100%;max-width:760px" referrerpolicy="strict-origin-when-cross-origin"></iframe>

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

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 international migration rate, July to June using official data, and cite the source.

rank_places {"indicator":"net_international_migration_rate_july_june","level":"province","within":"Montana","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_international_migration_rate_july_june&level=province&within=Montana&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest net international migration rate, July to June?

Madison County, with 2.95 per 1,000 inhabitants in 2021, according to the U.S. Census Bureau.

Which county has the lowest net international migration rate, July to June?

Big Horn County, with -0.08 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 international migration rate per 1,000 residents, 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.