From a total population of 187,197, Peoria County has a median age of 36.8. The average age of males, in Peoria County, is 35.4 while the average age of females is 38.2. When you compare this to median age of Illinois, Peoria County is 0.2 years younger.
The median income of individuals, in Peoria County, is $28,414 while the average household income is $51,454. When comparing the median income of people living in Peoria County to the rest of Illinois, the average income in Peoria County is $1,605 less.