St. Clair County, Illinois

IL · FIPS 17163 · ACS 2024 5-Year Estimates

Key Statistics

Total Population
253,694
Rank #284 of 3,222
91th %ile
Median Household Income
$73,854 −1.7% vs nat'l
Rank #926 of 3,222
71th %ile
Poverty Rate
13.6% +7.8% vs nat'l
Rank #1,657 of 3,222
49th %ile
Median Home Value
$180,300 −36.0% vs nat'l
Rank #1,638 of 3,222
49th %ile
Bachelor's Degree or Higher
31.8% −5.6% vs nat'l
Rank #640 of 3,222
80th %ile
Unemployment Rate
5.8% +8.9% vs nat'l
Rank #2,424 of 3,222
25th %ile

At a Glance

68.4% Homeownership
94.9% Insured
31.8% Bachelor's+

Age & Sex Distribution

MaleFemale
0-910-1920-2930-3940-4950-5960-6970-7980+10%5%0%5%10%

Race & Ethnicity

White (non-Hispanic)Black (non-Hispanic)Two or More RacesHispanic or LatinoAsian (non-Hispanic)Other (non-Hispanic)American Indian (non-Hispanic)Native Hawaiian/Pacific Islander0.0%19.7%39.4%59.1%27.7%5.8%5.1%1.6%0.5%0.2%0.0%

About St. Clair County, Illinois

St. Clair County, Illinois has a total population of 253,694, making it the 284th most populous county in the United States. The median age in St. Clair County is 39.9 years, which is 2.6% above the national median of 38.9 years.

The median household income in St. Clair County is $73,854, which ranks #926 of 3,222 counties nationwide. This is 1.7% below the national median of $75,149. The poverty rate is 13.6%, higher than the national rate of 12.6%. The unemployment rate stands at 5.8%.

The median home value in St. Clair County is $180,300, 36.0% below the national median. Renters in St. Clair County pay a median gross rent of $1,090 per month. The homeownership rate is 68.4%, compared to the national rate of 64.4%.

In St. Clair County, 31.8% of residents aged 25 and older hold a bachelor's degree or higher, 5.6% below the national average of 33.7%. Health insurance coverage stands at 94.9% of the population. The average commute time for workers is 26.2 min.

St. Clair County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 59.1% of the population, followed by Black (non-Hispanic) (27.7%) and Two or More Races (5.8%).

All data for St. Clair County, Illinois comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.

About this data

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.