From a total population of 13,569, Centralia has a median age of 42.9. The average age of males, in Centralia, is 41.7 while the average age of females is 46.4. When you compare this to median age of Illinois, Centralia is 5.9 years older.
The median income of individuals, in Centralia, is $21,200 while the average household income is $32,253. When comparing the median income of people living in Centralia to the rest of Illinois, the average income in Centralia is $8,819 less.