Centralia is a city located in Marion County Illinois. Centralia has a 2020 population of 13,983. Centralia is currently declining at a rate of -0.47% annually and its population has decreased by -6.98% since the most recent census, which recorded a population of 15,033 in 2010. Centralia reached it's highest population of 15,033 in 2010.
The average household income in Centralia is $56,733 with a poverty rate of 20.68%. The median rental costs in recent years comes to $654 per month, and the median house value is $71,000. The median age in Centralia is 42 years, 40.9 years for males, and 43.2 years for females.