Demographics & People — Custer County, Montana
Population & Households
| Population (official) | 11,957 |
|---|---|
| Median Age | 42.80 |
| Veterans | 1,015 |
| Housing Units | 5,770 |
| Uninsured | 183 |
Migration
| Inflow | 10,753 |
|---|---|
| Outflow | 10,747 |
| Net | 6 |
| Growing | Yes |
| Year | 2022-2023 |
Source: Census ACS 5-Year 2022. Official numbers: Census ACS 5-Year 2022 — county-level query.
Data provenance: aggregated from town-level sources, county.json. Rebuilt 2026-04-13T15:43:28.984872+00:00; aggregated 2026-04-13T16:08:24.155753+00:00.