Market insights · Montana
Yellowstone County, MT: growth, migration and housing
Yellowstone County has 172,692 residents, up 4.5% since 2020 (+0.7% in the last year). In 2022–2023, 4,049 households moved in and 3,743 moved out (+306 net), bringing in a net $16.9M of income. Median household income is $76,570, the median home $349,500 and median rent $1,131 a month.
In Montana: 23rd of 56 counties for 5-year population growth · 27th of 46 counties for net in-migration (per resident) · 7th of 56 counties for median household income · 16th of 56 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Yellowstone County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Gallatin County, MT | 239 | $14.6M |
| Carbon County, MT | 114 | $6.7M |
| Stillwater County, MT | 111 | $7.8M |
| Missoula County, MT | 96 | $7.6M |
| Big Horn County, MT | 93 | $4.3M |
| Maricopa County, AZ | 89 | $6.0M |
| Cascade County, MT | 85 | $4.7M |
| Lewis and Clark County, MT | 79 | $5.0M |
Where leavers went
Top counties by households leaving Yellowstone County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Gallatin County, MT | 217 | $13.6M |
| Carbon County, MT | 121 | $6.9M |
| Missoula County, MT | 113 | $8.9M |
| Maricopa County, AZ | 95 | $7.4M |
| Stillwater County, MT | 91 | $6.6M |
| Lewis and Clark County, MT | 82 | $6.6M |
| Big Horn County, MT | 79 | $2.9M |
| Cascade County, MT | 69 | $2.9M |
BizyFi in Yellowstone 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.