From a total population of 146,125, Joliet has a median age of 32.5. The average age of males, in Joliet, is 32 while the average age of females is 33.2. When you compare this to median age of Illinois, Joliet is 4.5 years younger.
The median income of individuals, in Joliet, is $24,461 while the average household income is $62,008. When comparing the median income of people living in Joliet to the rest of Illinois, the average income in Joliet is $5,558 less.