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Market insights · Montana

Broadwater County, MT: growth, migration and housing

Broadwater County has 8,493 residents, up 23.8% since 2020 (+2.5% in the last year). In 2022–2023, 323 households moved in and 227 moved out (+96 net), bringing in a net $11.9M of income. Median household income is $70,374, the median home $426,600 and median rent $955 a month.

Population (2025)8,493
5-year growth+23.8%
1-year growth+2.5%
Net households moving in+96
Per 1,000 residents+11.3
Net income moving in+$11.9M
Median household income$70,374
Median home value$426,600
Median rent$955/mo
Rent as share of income16%

In Montana: 1st of 56 counties for 5-year population growth · 2nd of 46 counties for net in-migration (per resident) · 19th of 56 counties for median household income · 8th of 56 counties for median home value.

Where new residents came from

Top counties by households (tax returns) moving to Broadwater County, 2022–2023 (IRS).

FromHouseholds (tax returns)Their income (AGI)
Gallatin County, MT107$10.0M
Lewis and Clark County, MT54$3.4M

Where leavers went

Top counties by households leaving Broadwater County, 2022–2023 (IRS).

ToHouseholds (tax returns)Their income (AGI)
Lewis and Clark County, MT53$2.8M
Gallatin County, MT44$2.6M

BizyFi in Broadwater 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.