Collinsville Flag

Collinsville

County:
Madison County
County Seat:
No
Area (mi²):
15.241
State:
Illinois

Collinsville is a city located in Madison County, Illinois. Collinsville has a 2025 population of 23,413. Collinsville is currently declining at a rate of -0.78% annually and its population has decreased by -3.76% since the most recent census, which recorded a population of 24,327 in 2020.

The average household income in Collinsville is $87,041 with a poverty rate of 13.01%.The median age in Collinsville is 39.7 years: 37.6 years for males, and 42.6 years for females.

23.4K
Total Population
1,536
Density (mi²)
-183 -0.78%
Growth

Collinsville Population

Demographics

Economics and Income Statistics

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)