Caseyville Flag

Caseyville

County Seat:
No
Area (mi²):
34.892
State:
Illinois

Caseyville is located in St. Clair County, Illinois. Caseyville has a 2025 population of 34,602 . Caseyville is currently declining at a rate of -0.28% annually and its population has decreased by -2.47% since the most recent census, which recorded a population of 35,478 in 2020.

The average household income in Caseyville is $113,197 with a poverty rate of 7.24%. The median age in Caseyville is 38.8 years: 36.7 years for males, and 41.4 years for females. For every 100 females there are 105.2 males.

34.6K
Total Population
992
Density (mi²)
-97 -0.28%
Growth

Caseyville 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)