Market insights · Idaho
Madison County, ID: growth, migration and housing
Madison County has 55,172 residents, up 4.2% since 2020 (+0.4% in the last year). In 2022–2023, 2,341 households moved in and 2,702 moved out (-361 net), while a net $20.1M of income left. Median household income is $60,160, the median home $414,800 and median rent $1,014 a month.
In Idaho: 39th of 44 counties for 5-year population growth · 42nd of 43 counties for net in-migration (per resident) · 35th of 44 counties for median household income · 9th of 44 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Madison County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Bonneville County, ID | 218 | $10.3M |
| Utah County, UT | 138 | $6.0M |
| Jefferson County, ID | 136 | $5.8M |
| Fremont County, ID | 112 | $4.6M |
| Maricopa County, AZ | 97 | $3.3M |
| Salt Lake County, UT | 71 | $2.4M |
| Ada County, ID | 66 | $2.3M |
| Davis County, UT | 49 | $2.7M |
Where leavers went
Top counties by households leaving Madison County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Bonneville County, ID | 343 | $15.4M |
| Utah County, UT | 265 | $9.2M |
| Jefferson County, ID | 155 | $10.9M |
| Salt Lake County, UT | 145 | $4.6M |
| Ada County, ID | 92 | $3.5M |
| Fremont County, ID | 89 | $4.0M |
| Maricopa County, AZ | 84 | $3.1M |
| Davis County, UT | 56 | $2.3M |
BizyFi in Madison 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.