St. Clair County, Illinois

Total Population: 254,777

County Seat: Belleville

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Median Home Value

$168,800

Owner-occupied units

Median Household Income

$70,178

Across all households

Median Age

39.5 yrs

Across all residents

Bachelor's Degree+

30.7%

Adults 25 and older

Nearby Counties

Demographics

14 fields

Racial & Ethnic Composition

White (Non-Hispanic)59.5%
Black (Non-Hispanic)27.8%
Two or More Races5.5%
Hispanic or Latino4.9%
Asian (Non-Hispanic)1.5%
Am. Indian / Alaska Native0.2%

Under 18 Years

23.3%

65 Years and Over

16.8%

Male

48.5%

Female

51.5%

U.S. Citizens (18+)

98.4%

No Health Insurance

5.4%

Education

3 fields

High School Graduate or Higher (25+)

92.7%

Bachelor's Degree or Higher (25+)

30.7%

Enrolled in College (18+)

7.3%

Economics

6 fields

Median Household Income

$70,178

Mean Household Income

$92,847

Per Capita Income

$37,824

Unemployment Rate (16+)

5.5%

In Labor Force (19–64)

77.8%

SNAP / Food Stamps

16.4%

Housing & Households

13 fields

Median Home Value

$168,800

Median Rent

$1,032/mo

Total Housing Units

115,348

Owner-Occupied

67.8%

Renter-Occupied

32.2%

Vacancy Rate

12.2%

Married Couple Households

43.9%

Cohabiting Couple Households

5.8%

Male Householder, No Partner

19.2%

Female Householder, No Partner

31.1%

Average Household Size

2.47

Broadband Internet Access

88.1%

Housing Built Since 2010

7.6%

Source: U.S. Census Bureau, American Community Survey 2023 5-Year Estimates. County FIPS 17163.