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
What sets Sauk County apart is money: median household income runs $77,648, near the US median of $78,538. With 65,759 residents, Sauk County is a county in Wisconsin. It ranks #25 among counties in Wisconsin by population.
Households take in a median $77,648, comfortably near the US median of $78,538. The poverty rate, 5.9%, is on the lower side for US counties and below the national 12.4%. A typical home is worth $242,400, with typical rent around $970.
Degree attainment is mid-range for US counties: 26.5% of adults hold a four-year degree, below the national 35.0%. About 8.4% of the workforce is home-based, below the national 14.0%, and the average commute runs about 23 minutes each way.
Taken together, the income and housing figures place Sauk County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
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.
Sauk County, WI Climate
Sauk County, WI has an average annual temperature of 7.1°C (45°F) and receives about 812 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
7.1°C
Avg Temp
812
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -10° / 15° | 26 mm |
| February | -7° / 20° | 27 mm |
| March | 0° / 32° | 54 mm |
| April | 7° / 45° | 75 mm |
| May | 14° / 57° | 84 mm |
| June | 19° / 66° | 99 mm |
| July | 21° / 71° | 98 mm |
| August | 20° / 68° | 100 mm |
| September | 16° / 60° | 102 mm |
| October | 9° / 48° | 57 mm |
| November | 1° / 34° | 52 mm |
| December | -6° / 21° | 38 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Sauk County, WI
The most comfortable months to visit Sauk County, WI are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -15°C low). September is usually the wettest month.
Where to stay near Sauk County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.