St. Clair County, IL

County

Cities in St. Clair County

Neighborhoods in St. Clair County

Dutch Hollow / Summit

Shiloh Station / Brookhill Estates

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

Demographics of St. Clair

Median Age

Bachelor's Degree+

31.8%

Households with Children

30.2%

School Enrollment K-12

29,753

Age Distribution

Population breakdown by life stage — from children to seniors. Reveals the generational mix of the community.

Early Childhood (0-4): 5.7%
School Age (5-17): 17.3%
Young Adults (18-34): 20.8%
Working Age (35-54): 25.3%
Pre-Retirement (55-64): 13.5%
Seniors (65+): 17.4%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

Educational Attainment

Highest level of education completed by residents 25 and older. Reflects the academic profile of the area.

Less than High School: 6.5%
High School / GED: 27.0%
Some College or Associate's: 34.7%
Bachelor's Degree or Higher: 31.8%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

Household Type

Household composition by family type and presence of children. Helps understand the family character of the area.

Families with Kids: 18.2%
Single Parents: 11.9%
Couples & Adults: 33.3%
Living Alone: 36.5%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

Racial & Ethnic Composition

Racial and ethnic composition based on U.S. Census self-identification. Hispanic or Latino is an ethnicity that may overlap with any race.

White: 59.1%
Hispanic or Latino: 5.1%
Asian: 1.6%
Black or African American: 27.7%
Other Race / Two or More Races: 6.4%
American Indian and Alaska Native: 0.1%
Native Hawaiian and Pacific Islander: 0.0%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources·Fair Housing Policy

Hispanic Population by Origin

Hispanic or Latino origin is asked separately from race — a person can be both Hispanic and any race.

Mexican: 62.5%
Puerto Rican: 11.3%
Cuban: 3.2%
Dominican: 0.6%
Central American: 6.4%
South American: 2.5%
Other Hispanic or Latino: 13.4%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

White Population by Ancestry

Ancestry reflects how residents self-identify culturally, not necessarily country of birth.

European: 43.9%
Middle Eastern or North African: 0.4%
Other White: 55.7%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

Black Population by Origin

Heritage and national origins within the Black or African American population, as reported to the Census.

African American: 65.8%
Sub-Saharan African: 0.5%
Caribbean: 0.3%
Other Black: 33.4%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

Place of Birth

Where residents were born — in-state, from other U.S. states, or from abroad. Reflects the community's migration patterns.

Born in Same State: 57.8%
Born in Other U.S. State: 37.4%
Born Outside U.S. (American): 1.6%
Foreign-Born Naturalized: 1.8%
Foreign-Born Non-Citizen: 1.5%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

Language Spoken at Home

Languages spoken by residents at home. Shows the linguistic diversity and cultural makeup of the area.

English Only: 95.0%
Spanish: 2.8%
European & Indo-European: 0.9%
East & Southeast Asian: 1.0%
Arabic: 0.3%
Other: 0.1%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources

School Enrollment

Current school enrollment levels from pre-K through graduate school. Useful for families evaluating local education demand.

Preschool / Kindergarten: 2.9%
Elementary (1-4): 5.0%
Middle School (5-8): 5.8%
High School (9-12): 5.9%
College / Graduate: 6.1%
Not Enrolled: 74.4%

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, 2024·Sources