Sauk County, Wisconsin Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 25th-largest in Wisconsin
The population of Sauk County, Wisconsin is 65,759 as of the 2023 American Community Survey, making it the 25th-largest county in Wisconsin. The median household income is $77,648, the median home value is $242,400, and the median age is 41.3.
The population of Sauk County has grown 7.1% since 2010 (62,051 → 66,486), a +0.49% annualized rate.
65,759
Population
+0.49%
Annual growth
79
People / sq mi
$77,648
Median Income
$242,400
Median Home Value
Sauk County covers 832 sq mi of land at 79.1 people per square mile.
About Sauk County, WI
Sauk County is a county in Wisconsin with a population of 65,759. It ranks #25 among counties in Wisconsin by population. The median age is 41.3, older than the national median. The population is 50.2% male and 49.8% female.
The median household income in Sauk County is $77,648, near the US median of $74,580. 5.9% of residents live below the federal poverty level. Home values sit at a median of $242,400, with monthly rent averaging $970. The homeownership rate of 73.1% is higher than the national rate of 64.8%.
Educational attainment in Sauk County reflects 26.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 8.4% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 23.3 minutes each way.
Sauk County Population History (2010-2024)
The county of Sauk County had a population of 62,051 in 2010 and 66,486 in 2024, a 7.1% growth over 14 years. The peak was 66,486 in 2024. Average annual growth rate: 0.50%.
66,486
Population (2024)
62,051
Population (2010)
66,486
Peak (2024)
0.50%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 62,051 |
| 2011 | 62,241 |
| 2012 | 62,377 |
| 2013 | 62,788 |
| 2014 | 62,972 |
| 2015 | 63,290 |
| 2016 | 63,627 |
| 2017 | 63,956 |
| 2018 | 64,306 |
| 2019 | 64,420 |
| 2020 | 65,793 |
| 2021 | 65,705 |
| 2022 | 65,916 |
| 2023 | 66,143 |
| 2024 | 66,486 |
Race & Ethnicity
| White | 89.0% |
| Black or African American | 0.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Age & Sex
41.3
Median Age
49.8%
Female
50.2%
Male
19.3%
Age 65+
Age Distribution
Children (under 15): 18.4% · Seniors (65+): 19.3%
Income & Poverty
| Median household income | $77,648+$1,978 vs state |
| Mean household income | $95,062 |
| Per-capita income | $39,770 |
| Poverty rate | 5.9%-0.7% vs state |
| Unemployment rate | 1.8% |
| Employment-to-population | 65.4% |
Top Industries by Employment
The largest employment sector in Sauk County is professional & business services, accounting for 20.0% of workers.
How residents commute
0.1%
Drive alone
2.5%
Carpool
78.4%
Public transit
8.4%
Work from home
23.3 min
Avg commute
Housing
$242,400$-5,000 vs state
Median home value
$970
Median rent
73.1%
Homeownership rate
31,091
Total housing units
88.2%
Occupied
11.8%
Vacant
26.9%
Renter-occupied
Social & access
93.6%
With health insurance
94.1%
With broadband internet
21.4%
Foreign-born
7.0%
Veterans (18+)
12.2%
With a disability
92.3%
Speak language other than English at home
Education
93.4%
High School+
26.5%
Bachelor's+
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Frequently Asked Questions
Sauk County, Wisconsin has a population of 65,759 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 25th-largest county in Wisconsin. Population density is 79 people per square mile.
The population of Sauk County has grown 7.1% since 2010 (62,051 → 66,486), a +0.49% annualized rate.
The median household income in Sauk County, Wisconsin is $77,648, with mean (average) household income of $95,062 and per-capita income of $39,770. 5.9% of residents live below the federal poverty level.
In Sauk County, the largest racial and ethnic groups are White (89.0%), Hispanic or Latino (1.6%), Black or African American (0.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Sauk County, Wisconsin is 41.3 years. Residents are 49.8% female and 50.2% male.
The median home value in Sauk County is $242,400 and median monthly rent is $970. 73.1% of occupied housing units are owner-occupied. The county has 31,091 total housing units, 11.8% of which are vacant.
The largest employment sector in Sauk County, Wisconsin is professional, scientific, and management services, employing 20.0% of workers. The unemployment rate is 1.8%.
Milwaukee is among the largest cities associated with Sauk County, Wisconsin, with a population of 569,756.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.