Market insights · Montana
Jefferson County, MT: growth, migration and housing
Jefferson County has 13,329 residents, up 9.8% since 2020 (+0.7% in the last year). In 2022–2023, 496 households moved in and 414 moved out (+82 net), bringing in a net $14.4M of income. Median household income is $95,490, the median home $446,900 and median rent $925 a month.
In Montana: 10th of 56 counties for 5-year population growth · 8th of 46 counties for net in-migration (per resident) · 1st of 56 counties for median household income · 7th of 56 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Jefferson County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Lewis and Clark County, MT | 133 | $14.4M |
| Gallatin County, MT | 70 | $4.4M |
| Silver Bow County, MT | 25 | $1.3M |
Where leavers went
Top counties by households leaving Jefferson County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Lewis and Clark County, MT | 127 | $9.0M |
| Gallatin County, MT | 38 | $2.0M |
| Silver Bow County, MT | 29 | $1.3M |
BizyFi in Jefferson 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.
← All Montana counties · National rankings
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.