Market insights · Wisconsin
Sauk County, WI: growth, migration and housing
Sauk County has 66,652 residents, up 1.3% since 2020 (+0.1% in the last year). In 2022–2023, 1,854 households moved in and 1,895 moved out (-41 net), bringing in a net $21.5M of income. Median household income is $79,541, the median home $258,600 and median rent $1,018 a month.
In Wisconsin: 35th of 72 counties for 5-year population growth · 49th of 72 counties for net in-migration (per resident) · 17th of 72 counties for median household income · 19th of 72 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Sauk County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Dane County, WI | 383 | $27.8M |
| Columbia County, WI | 231 | $18.8M |
| Juneau County, WI | 100 | $5.3M |
| Richland County, WI | 73 | $3.7M |
| Adams County, WI | 55 | $2.3M |
| Iowa County, WI | 33 | $1.4M |
| Milwaukee County, WI | 30 | $1.8M |
| Cook County, IL | 27 | $2.0M |
Where leavers went
Top counties by households leaving Sauk County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Dane County, WI | 367 | $18.6M |
| Columbia County, WI | 209 | $9.1M |
| Juneau County, WI | 102 | $4.9M |
| Richland County, WI | 69 | $3.9M |
| Adams County, WI | 59 | $2.8M |
| Cook County, IL | 34 | $1.5M |
| Milwaukee County, WI | 33 | $1.6M |
| Marquette County, WI | 27 | $1.0M |
BizyFi in Sauk 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.