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St. Clair County, Illinois

Interactive maps and statistics for St. Clair County, Illinois: income, age, education, housing, health and more, set beside Illinois and the United States.

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Key figures

StatisticSt. Clair County, Illinois IllinoisUnited States Rank
Total Population253,69412,694,798334,922,499284th of 3,222
Median Household Income$73,854$83,390$80,734926th of 3,221
Median Age39.939.038.92142nd of 3,222
Bachelor's Degree or Higher31.8%37.8%35.7%637th of 3,222
Median Home Value$180,300$263,300$332,7001638th of 3,217
Median Gross Rent$1,090$1,274$1,413745th of 3,215
Poverty Rate13.6%11.8%12.5%1553rd of 3,222
Unemployment Rate6.0%5.8%5.2%699th of 3,222
Population per Square Mile385.7228.7n/a416th of 3,222
Foreign Born3.3%14.7%14.1%1425th of 3,222
Life Expectancy74.7n/an/a1921st of 3,062
Homeownership Rate68.4%67.1%65.2%2449th of 3,222
Average Commute Time24.027.826.41658th of 3,221
Worked from Home12.4%15.9%15.1%722nd of 3,222
Uninsured6.8%n/an/a2564th of 3,134
Married-Couple Households44.4%45.3%46.9%2454th of 3,222
Broadband Access86.3%n/an/a992nd of 3,135

Rank is among all US counties with published data, counting down from the highest value. Figures come from the American Community Survey, CDC, BLS, BEA and other federal sources. Open the map for 1,147 statistics and the year and margin of error behind each one.

Race and ethnicity in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
White (non-Hispanic)59.1%58.1%57.4%
Hispanic or Latino (any race)5.1%18.8%19.3%
Black (non-Hispanic)27.7%13.3%11.9%
Asian (non-Hispanic)1.6%5.9%5.9%
Two or More Races (non-Hispanic)5.8%3.4%4.3%
American Indian & Alaska Native (non-Hispanic)0.2%0.1%0.5%
Native Hawaiian & Pacific Islander (non-Hispanic)0.0%0.0%0.2%
Some Other Race (non-Hispanic)0.5%0.4%0.6%
Diversity Index56.860.561.4

Age in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
Median Age39.939.038.9
Under 18 %23.0%21.8%22.0%
Age 18-24 %8.1%9.1%9.1%
Age 25-34 %12.7%13.6%13.7%
Age 35-44 %13.4%13.3%13.2%
Age 45-64 %25.4%25.2%24.8%
Age 65 and Over %17.3%17.0%17.2%

Households and families in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
Households100,8465,036,449129,227,496
Average Household Size2.52.52.5
Family Households63.0%62.2%64.2%
Households with Children30.2%28.6%29.5%
Single-Parent Families18.6%16.8%17.3%
People Living Alone31.8%31.2%28.7%
Never Married34.6%36.4%34.4%

Income and poverty in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
Per Capita Income$38,942$46,406$44,673
Households Under $25,00016.8%14.6%14.6%
Households $50,000 to $74,99915.4%14.8%15.5%
Households $100,000 to $149,99917.0%18.0%17.5%
Households $200,000 or More9.6%13.8%13.4%
Poverty Rate13.6%11.8%12.5%
Below 200% of Poverty28.8%26.1%28.2%
SNAP Households16.2%13.8%n/a

Housing in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
Housing Units115,6305,457,452143,775,355
Single-Family Detached Homes72.1%58.2%61.3%
Buildings with 5+ Units10.5%21.8%19.1%
Vacancy Rate12.8%7.7%10.1%
Median Year Structure Built1,975.01,971.01,980.0
Renter-Occupied31.6%32.9%34.8%
Rent as % of Household Income28.9%29.1%30.6%
Median Property Tax$3,665$5,298n/a

Education in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
Less than High School6.5%9.5%10.4%
High School Graduate27.0%25.1%26.0%
Some College or Associate Degree34.7%27.5%27.9%
Bachelor's Degree18.0%22.6%21.6%
Graduate or Professional Degree13.8%15.3%14.1%

Work and commuting in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
Labour Force Participation63.4%65.0%63.5%
Drove Alone to Work75.4%65.9%68.8%
Public Transit1.6%5.8%3.2%
Walked to Work1.5%2.8%2.4%
Commutes Under 15 Minutes27.3%24.9%26.0%
Commutes Over an Hour4.4%9.8%8.6%
Households Without a Car7.5%11.0%n/a

Origins and language in St. Clair County, Illinois

StatisticSt. Clair County, IllinoisIllinoisUnited States
Born in State of Residence57.8%66.5%57.3%
Naturalised Citizens1.8%7.7%7.4%
Non-Citizens1.5%7.0%6.8%
Speaks Only English at Home95.0%76.0%77.7%
Speaks Spanish at Home2.8%14.0%13.6%
Limited English Proficiency4.0%18.9%16.7%

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