In 2017, St. Clair County, IL had a population of 262k people with a median age of 38.1 and a median household income of $51,670. Between 2016 and 2017 the population of St. Clair County, IL declined from 262,759 to 262,479, a -0.107% decrease and its median household income grew from $50,267 to $51,670, a 2.79% increase.
The population of St. Clair County, IL is 62.2% White Alone, 29.8% Black or African American Alone, and 3.94% Hispanic or Latino. N/A% of the people in St. Clair County, IL speak a non-English language, and 98.2% are U.S. citizens.
The largest universities in St. Clair County, IL are Southwestern Illinois College (2,713 degrees awarded in 2016), McKendree University (865 degrees), and Vatterott College-Fairview Heights (181 degrees).
The median property value in St. Clair County, IL is $128,500, and the homeownership rate is 63.7%. Most people in St. Clair County, IL commute by Drove Alone, and the average commute time is 24.4 minutes. The average car ownership in St. Clair County, IL is 2 cars per household.