County · Wisconsin
Sauk County, Wisconsin
Sauk County, Wisconsin. Sauk County had 66,652 residents in 2025 by the Census Bureau's estimate, up 1.3% since 2020, in line with Wisconsin (+1.3%). It holds 41 places (17 cities, villages and boroughs, 22 towns and townships and 2 census-designated) and 24 census tracts. GEOID 55111.
Sauk County is the county of the Baraboo, WI micropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
66,652
Census Bureau estimate (no margin published)
2020 Census count: 65,763 · ACS 2020-2024: 66,009
Median household income
$79,541
±$2,340 (90% margin)
Wisconsin: $77,485
Median home value
$258,600
±$5,849 (90% margin)
Wisconsin: $266,500
Median gross rent
$1,018
±$31 (90% margin)
Wisconsin: $1,087
How many people live in Sauk County, and is it growing?
The 2020 Census counted 65,763 residents in Sauk County. The Census Bureau estimates 66,652 for July 1, 2025, up 1.3% since 2020, in line with Wisconsin (+1.3%). The 2020-2024 American Community Survey puts the population at 66,009 over 832 square miles of land.
| Measure | Sauk County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Total population | 66,009 | 5,914,872 | +2,087 |
| Households | 27,987±334 | 2,479,480 | +1,765 |
| Average household size | 2.33±0.03 | 2.33 | −0.08 |
| Housing units | 31,496±62 | 2,778,572 | +1,082 |
Sauk County's population since 2000
From 55,225 in 2000 to 66,652 in 2025: up 20.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Sauk County?
Sauk County holds 41 places: 17 cities, villages and boroughs (incorporated places), 22 towns and townships (county subdivisions with their own government) and 2 census-designated places. The largest is Baraboo with 13,224 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Baraboo | 12,556 | $69,750 |
|---|---|---|
| Reedsburg | 9,984 | $75,028 |
| Prairie du Sac | 4,420 | $101,049 |
| Sauk City | 3,518 | $91,042 |
| Lake Delton | 3,501 | $51,964 |
| Delton (town) | 2,460 | $87,299 |
| Dellona (town) | 1,901 | $103,043 |
| Spring Green (town) | 1,828 | $82,692 |
| Baraboo (town) | 1,816 | $100,909 |
| West Baraboo | 1,627 | $60,880 |
| Excelsior (town) | 1,603 | $92,083 |
| Spring Green | 1,566 | $87,344 |
| La Valle (town) | 1,420 | $86,172 |
| Merrimac (town) | 1,247 | $109,375 |
| Reedsburg (town) | 1,185 | $92,961 |
| Fairfield (town) | 1,078 | $84,828 |
| Prairie du Sac (town) | 1,076 | $110,905 |
| Sumpter (town) | 1,055 | $59,231 |
| Washington (town), Sauk County | 1,021 | $81,071 |
| Greenfield (town), Sauk County | 909 | $115,714 |
| Winfield (town) | 890 | $94,375 |
| Woodland (town) | 839 | $80,893 |
| Troy (town), Sauk County | 781 | $82,250 |
| Plain | 749 | $96,000 |
| Honey Creek (town) | 749 | $100,625 |
| Franklin (town), Sauk County | 668 | $106,667 |
| Ironton (town) | 662 | $77,500 |
| Bear Creek (town), Sauk County | 641 | $78,594 |
| North Freedom | 603 | $83,750 |
| Westfield (town), Sauk County | 582 | $66,071 |
| Bluffview | 536 | $46,943 |
| Merrimac | 527 | $92,417 |
| Freedom (town), Sauk County | 449 | $92,500 |
| La Valle | 388 | $76,607 |
| Wisconsin Dells | 2,942 | $54,688 |
| Rock Springs | 327 | $77,250 |
| Loganville | 301 | $73,750 |
| Ironton | 274 | $50,938 |
| Lime RidgeGEOID 5544225 | 158 | $114,375 |
| Lake Wisconsin | 4,616 | $124,127 |
| Cazenovia | 363 | $73,750 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Sauk County?
The median resident of Sauk County is 41.6 years old; 22.3% are under 18 and 19.9% are 65 or older. The largest group is non-Hispanic white residents at 86.3%, then Hispanic or Latino residents (of any race) at 6.8%. 3.9% of residents were born outside the United States.
| Measure | Sauk County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.6±0.4 | 40.2 | no clear change |
| Under 18 years | 22.3% | 21.4% | – |
| 65 years and over | 19.9%±0.1 pts | 18.5% | – |
| Hispanic or Latino (any race) | 6.8% | 8.0% | +1.7 pts |
| White alone, not Hispanic | 86.3%±0.7 pts | 78.6% | −4.6 pts |
| Black or African American alone, not Hispanic | 0.8%±0.3 pts | 5.9% | no clear change |
| Asian alone, not Hispanic | 0.4%±0.1 pts | 2.9% | −0.2 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.5%±0.2 pts | 0.5% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.4%±0.5 pts | 3.7% | – |
| Some other race alone, not Hispanic | 0.8%±0.6 pts | 0.3% | – |
| Born outside the United States | 3.9%±0.6 pts | 5.2% | +0.9 pts |
| Speak a language other than English at home (age 5+) | 8.1%±0.8 pts | 9.0% | – |
| Civilian veterans (age 18+) | 7.0%±0.7 pts | 6.2% | – |
| With a disability | 13.0%±0.9 pts | 12.3% | – |
| No health insurance coverage | 6.0%±0.9 pts | 5.2% | no clear change |
| High school graduate or higher (age 25+) | 92.6%±0.9 pts | 93.6% | – |
| Bachelor's degree or higher (age 25+) | 27.3%±1.2 pts | 33.4% | +3.2 pts |
| Graduate or professional degree (age 25+) | 8.2%±0.7 pts | 11.4% | – |
| Moved from another state in the past year | 1.1%±0.4 pts | 2.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Sauk County earn?
Half of Sauk County's 27,987 households earn less than $79,541 a year (±$2,340), against $77,485 in Wisconsin. In 2015-2019 the median was $73,771 in 2024 dollars, so it rose by $5,770 after inflation. 8.1% of residents live below the poverty line.
| Measure | Sauk County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $79,541±$2,340 | $77,485 | +$5,770 |
| Mean household income | $98,005±$3,798 | $101,466 | – |
| Per capita income | $41,246±$1,588 | $43,373 | +$3,107 |
| People below the poverty line | 8.1%±0.7 pts | 10.6% | −1.8 pts |
| Children under 18 below the poverty line | 8.6%±1.7 pts | 12.8% | −6.7 pts |
| Households receiving SNAP | 10.1%±1.1 pts | 11.1% | – |
| Households with a broadband subscription | 88.5%±1.1 pts | 90.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Sauk County?
Owners occupy 72.4% of Sauk County's occupied homes and renters 27.6%. The median owner-occupied home is valued at $258,600 by its owner (±$5,849). The median renter pays $1,018 a month including utilities, and 31.8% of renters pay 35% or more of their income on rent.
| Measure | Sauk County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $258,600±$5,849 | $266,500 | +$34,368 |
| Median gross rent | $1,018±$31 | $1,087 | no clear change |
| Renters paying 35% or more of income on rent | 31.8%±3.6 pts | 35.0% | no clear change |
| Median monthly owner costs, with a mortgage | $1,646±$43 | $1,689 | – |
| Owner-occupied homes | 72.4%±1.7 pts | 67.8% | +3.5 pts |
| Housing units | 31,496±62 | 2,778,572 | +1,082 |
| Homeowner vacancy rate | 0.6%±0.3 pts | 0.5% | – |
| Rental vacancy rate | 5.3%±2.4 pts | 4.5% | – |
| Single-family detached homes | 69.2%±1.6 pts | 66.2% | – |
| Mobile homes | 6.8%±0.8 pts | 3.1% | – |
| Built 2020 or later | 1.3%±0.4 pts | 1.4% | – |
| Built 1939 or earlier | 18.7%±1.1 pts | 17.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Sauk County building?
Builders took permits for 231 new housing units across Sauk County in 2025 (201 single-family), 3.5 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Sauk County get to work?
77.0% of Sauk County's workers drive alone and 9.6% work from home. The average trip to work takes 23.0 minutes. The unemployment rate in 2020-2024 averaged 2.3%.
| Measure | Sauk County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 66.8%±1.1 pts | 65.3% | – |
| Unemployment rate | 2.3%±0.5 pts | 3.2% | no clear change |
| Drove alone to work | 77.0%±1.5 pts | 74.4% | – |
| Carpooled | 9.0%±1.2 pts | 7.3% | – |
| Public transportation | 0.1%±0.1 pts | 1.1% | – |
| Walked | 2.4%±0.5 pts | 2.6% | – |
| Worked from home | 9.6%±1.1 pts | 13.1% | +5.3 pts |
| Mean travel time to work | 23.0 min±0.7 | 22.2 min | +1.0 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Sauk County's census tracts?
Sauk County is divided into 24 census tracts. Among those with a reliable estimate, median household income runs from $49,529 (Tract 1.02) to $108,750 (Tract 6.01).
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Sauk County compare with Wisconsin's other counties?
| Measure | Rank |
|---|---|
| Population | 25th of 72 |
| Growth 2020-2025 | 35th of 72 |
| Residents per square mile | 25th of 72 |
| Median household income | 17th of 72 |
| Median home value | 19th of 72 |
| Median gross rent | 19th of 72 |
| Poverty rate | 59th of 72 |
| Bachelor's degree or higher | 30th of 72 |
| Median age | 49th of 72 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Sauk County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.