
Madison
- County:
- Madison County
- County Seat:
- No
- Area (mi²):
- 14.145
- State:
- Illinois
Madison is a city located in Madison County, Illinois. Madison has a 2025 population of 3,017. Madison is currently declining at a rate of -0.79% annually and its population has decreased by -3.83% since the most recent census, which recorded a population of 3,137 in 2020.
The average household income in Madison is $48,614 with a poverty rate of 30.77%. The median age in Madison is 46.7 years: 48.4 years for males, and 46.1 years for females.