From a total population of 9,933, Bethalto has a median age of 36. The average age of males, in Bethalto, is 32.5 while the average age of females is 39.6. When you compare this to median age of Illinois, Bethalto is 1.0 year younger.
The median income of individuals, in Bethalto, is $28,723 while the average household income is $60,236. When comparing the median income of people living in Bethalto to the rest of Illinois, the average income in Bethalto is $1,296 less.