Madison County, IL has a population of 265,759 people with a median age of 40.4 and a median household income of $56,035. Between 2015 and 2016 the population of Madison County, IL declined from 266,209 to 265,759, a 0.17% decrease and its median household income grew from $52,664 to $56,035, a 6.4% increase.
The population of Madison County, IL is N/A Other, N/A Two+, and N/A Hawaiian. N/A of the people in Madison County, IL speak a non-English language, and 98.6% are U.S. citizens.
The largest universities in Madison County, IL are Southern Illinois University-Edwardsville, with 2,984 graduates, Lewis and Clark Community College, with 1,569 graduates, and CALC Institute of Technology, with 124 graduates.
The median property value in Madison County, IL is $137,700, and the homeownership rate is 71.8%. Most people in Madison County, IL commute by Drove Alone, and the average commute time is 23.8 minutes. The average car ownership in Madison County, IL is 2 cars per household.
Madison County, IL is the 8th most populated county in Illinois and borders Bond County, IL; Clinton County, IL; Jersey County, IL; Macoupin County, IL; Montgomery County, IL; St. Clair County, IL; St. Charles County, MO; St. Louis County, MO; St. Louis city, MO& 4 more.