Market insights · Montana
Lewis and Clark County, MT: growth, migration and housing
Lewis and Clark County has 75,331 residents, up 5.8% since 2020 (+0.3% in the last year). In 2022–2023, 2,176 households moved in and 1,991 moved out (+185 net), bringing in a net $20.7M of income. Median household income is $78,237, the median home $393,500 and median rent $1,102 a month.
In Montana: 18th of 56 counties for 5-year population growth · 22nd of 46 counties for net in-migration (per resident) · 5th of 56 counties for median household income · 12th of 56 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Lewis and Clark County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Gallatin County, MT | 134 | $7.5M |
| Missoula County, MT | 133 | $7.7M |
| Jefferson County, MT | 127 | $9.0M |
| Cascade County, MT | 85 | $4.9M |
| Yellowstone County, MT | 82 | $6.6M |
| Broadwater County, MT | 53 | $2.8M |
| Silver Bow County, MT | 53 | $3.1M |
| Flathead County, MT | 43 | $2.4M |
Where leavers went
Top counties by households leaving Lewis and Clark County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Missoula County, MT | 142 | $7.0M |
| Jefferson County, MT | 133 | $14.4M |
| Gallatin County, MT | 120 | $5.9M |
| Cascade County, MT | 107 | $5.8M |
| Yellowstone County, MT | 79 | $5.0M |
| Broadwater County, MT | 54 | $3.4M |
| Silver Bow County, MT | 51 | $2.1M |
| Flathead County, MT | 41 | $2.8M |
BizyFi in Lewis and Clark 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.