Market insights · Montana
Flathead County, MT: growth, migration and housing
Flathead County has 115,429 residents, up 10.1% since 2020 (+0.9% in the last year). In 2022–2023, 3,495 households moved in and 2,814 moved out (+681 net), bringing in a net $122.1M of income. Median household income is $73,925, the median home $535,500 and median rent $1,142 a month.
In Montana: 9th of 56 counties for 5-year population growth · 9th of 46 counties for net in-migration (per resident) · 11th of 56 counties for median household income · 2nd of 56 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Flathead County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Missoula County, MT | 164 | $8.6M |
| Gallatin County, MT | 137 | $8.2M |
| Lake County, MT | 125 | $8.4M |
| Lincoln County, MT | 83 | $6.6M |
| King County, WA | 82 | $15.0M |
| Los Angeles County, CA | 77 | $12.3M |
| San Diego County, CA | 70 | $9.8M |
| Maricopa County, AZ | 66 | $6.7M |
Where leavers went
Top counties by households leaving Flathead County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Missoula County, MT | 166 | $8.7M |
| Lincoln County, MT | 122 | $7.9M |
| Lake County, MT | 118 | $10.2M |
| Gallatin County, MT | 100 | $6.3M |
| Maricopa County, AZ | 68 | $8.4M |
| King County, WA | 49 | $7.4M |
| Lewis and Clark County, MT | 43 | $2.4M |
| Cascade County, MT | 42 | $2.2M |
BizyFi in Flathead County
Fewer than 3 companies in the BizyFi directory are based here. 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.