Migration to and from Big Horn County, Montana
Where Big Horn County residents came from and where they went over the 5-year window 2016-2020. Census ACS County-to-County Migration Flows, 2020 5-yr (frozen vintage).
Total inflow
330
people moved in (5-yr)
Total outflow
668
people moved out (5-yr)
Net migration
-338
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Oceania and At Sea | 70 | |
| Pontotoc County | Mississippi | 39 |
| Blaine County | Montana | 32 |
| Kern County | California | 26 |
| Yellowstone County | Montana | 18 |
| Uinta County | Wyoming | 18 |
| Renville County | North Dakota | 16 |
| Spokane County | Washington | 12 |
| Beaverhead County | Montana | 9 |
| Flathead County | Montana | 9 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Yellowstone County | Montana | 305 |
| Fremont County | Wyoming | 81 |
| Rosebud County | Montana | 42 |
| Okanogan County | Washington | 29 |
| Gallatin County | Montana | 24 |
| Flathead County | Montana | 23 |
| Washington County | Oregon | 18 |
| Spokane County | Washington | 18 |
| Lewis and Clark County | Montana | 17 |
| Sheridan County | Wyoming | 14 |
Explore Big Horn County
- Business data for Big Horn CountyConstruction sector establishments, employment, payroll
- Cities in MontanaACS demographic profiles for places statewide
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- Opportunity IndexRank counties by business growth potential
- Federal contracts in MTGovBids: RFPs, awards, NAICS matching
- New business filings in MontanaNewFilings: fresh SOS registrations
Methodology
- Counts represent the number of people aged 1+ who reported a different residence at the survey reference date than they did one year earlier, aggregated across the 5-year sample window 2016-2020.
- Outbound (OUT) flows are reported less frequently than inbound (IN) because the survey captures the destination side of each move. Many county pairs have null OUT counts, which is normal.
- "Total inflow" sums the published MOVEDIN counts across all origin counties, including foreign-region inflows (Africa, Asia, Central America, etc.). It is not the same as net population change.
- Frozen vintage. The Census Bureau has not released a newer county-to-county migration flows file. The 2020 5-yr vintage (covering 2016-2020) is the latest available as of build date.
Source: U.S. Census Bureau, American Community Survey, County-to-County Migration Flows: 2016-2020. Vintage: 2020 5-yr. Generated: 2026-05-28. FIPS: 30003.