Market insights · Montana
Sweet Grass County, MT: growth, migration and housing
Sweet Grass County has 3,762 residents, up 2.4% since 2020 (-1.5% in the last year). In 2022–2023, 106 households moved in and 91 moved out (+15 net), bringing in a net $5.8M of income. Median household income is $77,000, the median home $330,100 and median rent $1,149 a month.
In Montana: 32nd of 56 counties for 5-year population growth · 16th of 46 counties for net in-migration (per resident) · 6th of 56 counties for median household income · 17th of 56 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Sweet Grass County, 2022–2023 (IRS).
The IRS publishes no county-level flows for Sweet Grass County (it suppresses flows of fewer than 20 households).
Where leavers went
Top counties by households leaving Sweet Grass County, 2022–2023 (IRS).
The IRS publishes no county-level flows for Sweet Grass County (it suppresses flows of fewer than 20 households).
BizyFi in Sweet Grass 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.