Market insights · Idaho
Jefferson County, ID: growth, migration and housing
Jefferson County has 35,297 residents, up 13.6% since 2020 (+1.3% in the last year). In 2022–2023, 1,030 households moved in and 916 moved out (+114 net), bringing in a net $25.8M of income. Median household income is $86,679, the median home $408,400 and median rent $1,138 a month.
In Idaho: 5th of 44 counties for 5-year population growth · 14th of 43 counties for net in-migration (per resident) · 4th of 44 counties for median household income · 11th of 44 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) |
|---|---|---|
| Bonneville County, ID | 329 | $22.5M |
| Madison County, ID | 155 | $10.9M |
| Bingham County, ID | 35 | $1.7M |
| Utah County, UT | 28 | $1.7M |
| Salt Lake County, UT | 25 | $2.8M |
| Fremont County, ID | 22 | $0.9M |
| Ada County, ID | 21 | $1.5M |
| Bannock County, ID | 20 | $0.8M |
Where leavers went
Top counties by households leaving Jefferson County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Bonneville County, ID | 339 | $17.8M |
| Madison County, ID | 136 | $5.8M |
| Bingham County, ID | 36 | $2.1M |
| Utah County, UT | 34 | $2.1M |
| Bannock County, ID | 24 | $1.0M |
| Ada County, ID | 23 | $1.1M |
BizyFi in Jefferson County
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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.