• county
  • FIPS 55111
  • Largest town: Baraboo

Sauk County, Wisconsin

Sauk County had 66,486 residents in the Census Vintage 2024 estimate, on 831.6 square miles of land. It ranks 25th of 72 in Wisconsin by population and 27th by land area.

Population
66,486
#25 of 72 in Wisconsin · #822 in US
Area
831.6 sq mi
#27 of 72 in Wisconsin · #1,012 in US
Density
80 / sq mi
#25 of 72 in Wisconsin · #1,075 in US
Median household income
$79,349
#11 of 72 in Wisconsin · #500 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Sauk County within Wisconsin. Pin: Madison.

Measure from here

Tools and pages that start from Sauk County

Sauk County population, land area and income

Sauk County had 66,486 residents in the Census Vintage 2024 estimate, on 831.6 square miles of land. It ranks 25th of 72 in Wisconsin by population and 27th by land area. That works out to 80.0 people per square mile, near the US average of 96.3, and above the national county median.

The median county-equivalent in Wisconsin has 41,821 residents; Sauk County is somewhat larger.

Its SAIPE 2023 median household income of $79,349 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

66,486

3144th1st

822nd of 3,144 (US)

Land area

832 sq mi

3144th1st

1012th of 3,144 (US)

Density

80.0 / sq mi

3144th1st

1075th of 3,144 (US)

Median household income

$79,349

3143rd1st

500th of 3,143 (US)

Rank within Wisconsin (72)

Population

66,486

72nd1st

25th of 72 (WI)

Land area

832 sq mi

72nd1st

27th of 72 (WI)

Density

80.0 / sq mi

72nd1st

25th of 72 (WI)

Median household income

$79,349

72nd1st

11th of 72 (WI)

How Sauk County's population changed since 2020

Sauk County gained 693 residents between the July 2020 and July 2024 estimates, a rise of 1.1%. That ranks 35th of 72 in Wisconsin for growth. The median Wisconsin county changed by +1.0%, and the state as a whole by +1.1%.

Since the April 2020 estimates base, Sauk County recorded 3,012 births and 3,169 deaths, a natural change of -157. Net international migration added +833 and net domestic migration, people moving to or from other US counties, came to +21. The largest single component was international migration, which added 833 people.

65.8k202065.7k202165.9k202266.1k202366.5k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
3,012
Deaths
3,169
Net international migration
+833
Net domestic migration
+21
Change, July 2023 to July 2024
+343

Where Sauk County is

The Census internal point of Sauk County is at 43.428000, -89.943300. It sits in UTM zone 16N. The map shades Wisconsin's 72 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Sauk County outlined. Dots are towns of 1,000+ people with residents in it.

Barron County: +0.2%Green County: +0.4%Dunn County: +1.5%Jefferson County: +0.0%Lincoln County: +0.1%Rusk County: -0.1%Fond du Lac County: +0.1%Marquette County: +1.0%Outagamie County: +2.3%Waupaca County: -1.2%Oneida County: +0.8%Eau Claire County: +2.8%Washington County: +1.4%Portage County: +2.3%Menominee County: +0.7%Clark County: +0.5%Monroe County: +0.2%Milwaukee County: -1.5%Buffalo County: +1.1%Lafayette County: +4.2%Ozaukee County: +2.5%Rock County: +1.0%Sheboygan County: +0.2%Green Lake County: +1.8%Waukesha County: +2.3%Calumet County: +2.1%Dodge County: -0.8%Wood County: -0.3%Winnebago County: +0.9%Sawyer County: +4.0%Dane County: +4.6%Sauk County: +1.1%Pepin County: +2.9%Adams County: +3.2%Price County: +0.4%Taylor County: +1.1%Grant County: +0.7%Trempealeau County: -0.0%Vernon County: +2.1%Waushara County: +2.2%Iowa County: +1.0%Crawford County: -0.5%Kenosha County: -0.3%Shawano County: +1.1%Juneau County: -0.7%Jackson County: -0.3%Vilas County: +3.7%Bayfield County: +3.7%Chippewa County: +1.5%Iron County: +1.5%Racine County: +0.3%Door County: +1.3%Ashland County: +1.1%Kewaunee County: +0.9%Polk County: +1.8%Florence County: +2.4%Douglas County: -0.2%Forest County: +3.7%Columbia County: -0.7%Walworth County: +0.7%La Crosse County: +0.1%Manitowoc County: +0.1%Oconto County: +2.5%Langlade County: +0.4%Marathon County: +0.7%Washburn County: +2.2%Brown County: +1.8%Richland County: -0.9%Marinette County: +1.1%St. Croix County: +4.3%Pierce County: +2.7%Burnett County: +3.7%
Change 2020 to 2024
  1. < +0.1%
  2. < +0.7%
  3. < +1.3%
  4. < +2.3%
  5. ≥ +2.3%
no data

Orange pin: Sauk County internal point. Dark pin: Madison.

Internal point

Decimal
43.428000, -89.943300
DMS
43°25'40.80"N 89°56'35.88"W
UTM
16N 261762.4E 4812553.7N
Geohash
dp8p13c63
Plus code
86MGC3H4+6M

Towns in Sauk County

8 incorporated places of 1,000+ people have residents in Sauk County, 38,453 people together, or 58% of the county. Each figure counts only the part of the town inside Sauk County; towns marked "part" extend into another county. The largest is Baraboo with 13,096.

  1. 01Baraboo13,096
  2. 02Reedsburg10,314
  3. 03Prairie du Sac4,358
  4. 04Sauk City3,471
  5. 05Lake Delton3,466
  6. 06West Baraboo1,586
  7. 07Spring Green1,573
  8. 08Wisconsin Dells (part)589
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Sauk County

The Census 2024 county adjacency file lists 6 neighbors for Sauk County. The most populous is Dane County, WI, with 588,347 residents. Distances run between Census internal points in a straight line.

Distance to Madison and the nearest big city

Madison is 37.2 miles SE of Sauk County's internal point in a straight line. The nearest place of 100,000 or more is Madison, WI (population 285,300), 34.9 miles away. The nearest place of 10,000 or more is Reedsburg, WI (population 10,314), 7.8 miles away.

Sauk County FIPS code

The FIPS code of Sauk County is 55111: state code 55 for Wisconsin plus county code 111. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $79,349.

Questions people ask

What is the population of Sauk County, Wisconsin?

The Census Vintage 2024 estimate for July 1, 2024 is 66,486. That is up 693 people (1.1%) from the July 2020 estimate of 65,793.

What is the FIPS code of Sauk County?

55111. The first two digits (55) are Wisconsin; the last three (111) identify the county.

What is the largest town in Sauk County?

Baraboo, with 13,096 residents inside Sauk County in 2024.

Which counties border Sauk County?

6 county-equivalents border it in the Census 2024 adjacency file: Dane County, WI; Columbia County, WI; Vernon County, WI; Juneau County, WI; Iowa County, WI; Richland County, WI.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.