From a total population of 267,937, Madison County has a median age of 39.2. The average age of males, in Madison County, is 37.9 while the average age of females is 40.7. When you compare this to median age of Illinois, Madison County is 2.2 years older.
The median income of individuals, in Madison County, is $28,093 while the average household income is $53,912. When comparing the median income of people living in Madison County to the rest of Illinois, the average income in Madison County is $1,926 less.