Market insights · Montana
Sanders County, MT: growth, migration and housing
Sanders County has 14,062 residents, up 12.9% since 2020 (+1.2% in the last year). In 2022–2023, 415 households moved in and 327 moved out (+88 net), bringing in a net $14.7M of income. Median household income is $57,476, the median home $359,000 and median rent $820 a month.
In Montana: 6th of 56 counties for 5-year population growth · 7th of 46 counties for net in-migration (per resident) · 45th of 56 counties for median household income · 14th of 56 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Sanders County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Missoula County, MT | 26 | $0.9M |
| Flathead County, MT | 25 | $1.0M |
| Lake County, MT | 22 | $1.4M |
Where leavers went
Top counties by households leaving Sanders County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Flathead County, MT | 27 | $1.3M |
| Missoula County, MT | 22 | $1.1M |
| Lake County, MT | 21 | $0.8M |
BizyFi in Sanders County
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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.