Centralia Flag

Centralia

County:
Marion County
County Seat:
No
Area (mi²):
8.2
State:
Illinois

Centralia is a city located in Marion County, Illinois. Centralia has a 2026 population of 11,787. Centralia is currently declining at a rate of -0.43% annually and its population has decreased by -2.94% since the most recent census, which recorded a population of 12,144 in 2020.

11.8K
Total Population
1,437
Density (mi²)
-51 -0.43%
Growth

Nearby Cities

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)