Market insights · Montana
Custer County, MT: growth, migration and housing
Custer County has 12,034 residents, up 1.5% since 2020 (+0.5% in the last year). In 2022–2023, 289 households moved in and 298 moved out (-9 net), while a net $3.0M of income left. Median household income is $70,605, the median home $219,100 and median rent $893 a month.
In Montana: 34th of 56 counties for 5-year population growth · 32nd of 46 counties for net in-migration (per resident) · 17th of 56 counties for median household income · 32nd of 56 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Custer County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Yellowstone County, MT | 39 | $2.1M |
Where leavers went
Top counties by households leaving Custer County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Yellowstone County, MT | 44 | $2.0M |
BizyFi in Custer County
No companies in the BizyFi directory are based here yet. Search them on the company map (company names with a free account), or browse Montana companies.
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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.