St. Croix County, Wisconsin Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 17th-largest in Wisconsin

The population of St. Croix County, Wisconsin is 94,819 as of the 2023 American Community Survey, making it the 17th-largest county in Wisconsin. The median household income is $102,482, the median home value is $349,700, and the median age is 39.8.

The population of St. Croix County has grown 16.1% since 2010 (84,399 → 97,954), a +1.07% annualized rate.

St. Croix County within Wisconsin · Source: US Census TIGER/Line via us-atlas

94,819

Population

+1.07%

Annual growth

131

People / sq mi

$102,482

Median Income

$349,700

Median Home Value

St. Croix County covers 722 sq mi of land at 131.3 people per square mile.

About St. Croix County, WI

St. Croix County is a county in Wisconsin with a population of 94,819. It ranks #17 among counties in Wisconsin by population. The median age is 39.8, in line with the national median. The population is 50.3% male and 49.7% female.

The median household income in St. Croix County is $102,482, above the US median of $74,580. 4.8% of residents live below the federal poverty level. Home values sit at a median of $349,700, with monthly rent averaging $1,238. The homeownership rate of 78.9% is higher than the national rate of 64.8%.

Educational attainment in St. Croix County reflects 39.4% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 14.3% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 26.6 minutes each way.

St. Croix County Population History (2010-2024)

The county of St. Croix County had a population of 84,399 in 2010 and 97,954 in 2024, a 16.1% growth over 14 years. The peak was 97,954 in 2024. Average annual growth rate: 1.07%.

97,954

Population (2024)

84,399

Population (2010)

97,954

Peak (2024)

1.07%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	84,399	-	-	estimate
2011	84,836	+437	+0.52%	estimate
2012	85,075	+239	+0.28%	estimate
2013	85,700	+625	+0.73%	estimate
2014	86,599	+899	+1.05%	estimate
2015	87,207	+608	+0.70%	estimate
2016	87,643	+436	+0.50%	estimate
2017	88,615	+972	+1.11%	estimate
2018	89,721	+1,106	+1.25%	estimate
2019	90,691	+970	+1.08%	estimate
2020	93,893	+3,202	+3.53%	estimate
2021	95,025	+1,132	+1.21%	estimate
2022	96,138	+1,113	+1.17%	estimate
2023	97,156	+1,018	+1.06%	estimate
2024	97,954	+798	+0.82%	estimate

Race & Ethnicity

White	93.0%
Black or African American	0.7%
Asian	0.0%
Hispanic or Latino (any race)	0.9%
Two or More Races	0.0%

Age & Sex

39.8

Median Age

49.7%

Female

50.3%

Male

15.4%

Age 65+

Age Distribution

Under 5

5.7%

5–9

6.8%

10–14

7.1%

15–19

6.7%

20–24

5.2%

25–34

11.2%

35–44

14.2%

45–54

13.4%

55–59

7.7%

60–64

6.6%

65–74

9.7%

75–84

4.1%

85+

1.6%

Children (under 15): 19.6% · Seniors (65+): 15.4%

Income & Poverty

Median household income	$102,482+$26,812 vs state
Mean household income	$124,042
Per-capita income	$48,851
Poverty rate	4.8%-1.8% vs state
Unemployment rate	1.4%
Employment-to-population	68.5%

Top Industries by Employment

Professional & business services

22.1%

Manufacturing

18.2%

Finance & real estate

8.5%

Construction

7.7%

Education & health care

7.0%

Information

6.6%

Retail trade

5.9%

Arts, entertainment & food

4.3%

The largest employment sector in St. Croix County is professional & business services, accounting for 22.1% of workers.

How residents commute

0.2%

Drive alone

1.4%

Carpool

75.9%

Public transit

14.3%

Work from home

26.6 min

Avg commute

Housing

$349,700+$102,300 vs state

Median home value

$1,238

Median rent

78.9%

Homeownership rate

38,185

Total housing units

96.2%

Occupied

3.8%

Vacant

21.1%

Renter-occupied

Social & access

96.3%

With health insurance

96.4%

With broadband internet

53.3%

Foreign-born

7.1%

Veterans (18+)

9.9%

With a disability

96.5%

Speak language other than English at home

Education

96.3%

High School+

39.4%

Bachelor's+

Largest cities in Wisconsin

Milwaukee (569,756)Madison (275,568)Green Bay (106,585)Kenosha (99,147)Racine (77,155)Appleton (74,873)Waukesha (70,779)Eau Claire (69,274)Oshkosh (66,247)Janesville (65,813)All Wisconsin cities →

Other counties in Wisconsin

Milwaukee County (927,656)Dane County (564,777)Waukesha County (409,040)Brown County (269,425)Racine County (196,888)Outagamie County (191,537)Winnebago County (171,357)Kenosha County (168,413)Rock County (163,944)Marathon County (138,067)All Wisconsin counties →

Part of Wisconsin

Wisconsin demographic profile All Wisconsin data →

Metro areas in Wisconsin

Minneapolis (3,693,351)Milwaukee (1,566,361)Madison (683,967)Green Bay (329,375)Duluth (280,710)Appleton (244,163)Racine (196,888)Eau Claire (172,886)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

St. Croix County, Wisconsin has a population of 94,819 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 17th-largest county in Wisconsin. Population density is 131 people per square mile.

The population of St. Croix County has grown 16.1% since 2010 (84,399 → 97,954), a +1.07% annualized rate.

The median household income in St. Croix County, Wisconsin is $102,482, with mean (average) household income of $124,042 and per-capita income of $48,851. 4.8% of residents live below the federal poverty level.

In St. Croix County, the largest racial and ethnic groups are White (93.0%), Hispanic or Latino (0.9%), Black or African American (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in St. Croix County, Wisconsin is 39.8 years. Residents are 49.7% female and 50.3% male.

The median home value in St. Croix County is $349,700 and median monthly rent is $1,238. 78.9% of occupied housing units are owner-occupied. The county has 38,185 total housing units, 3.8% of which are vacant.

The largest employment sector in St. Croix County, Wisconsin is professional, scientific, and management services, employing 22.1% of workers. The unemployment rate is 1.4%.

Milwaukee is among the largest cities associated with St. Croix County, Wisconsin, with a population of 569,756.