From a total population of 4,125, Centralia has a median age of 36.8. The average age of males, in Centralia, is 35 while the average age of females is 38.3. When you compare this to median age of Missouri, Centralia is 1.3 years younger.
The median income of individuals, in Centralia, is $19,470 while the average household income is $41,189. When comparing the median income of people living in Centralia to the rest of Missouri, the average income in Centralia is $6,536 less.