From a total population of 29,393, Alton has a median age of 36. The average age of males, in Alton, is 34.6 while the average age of females is 37.5. When you compare this to median age of Illinois, Alton is 1.0 year younger.
The median income of individuals, in Alton, is $20,515 while the average household income is $36,076. When comparing the median income of people living in Alton to the rest of Illinois, the average income in Alton is $9,504 less.