From a total population of 62,516, Janesville has a median age of 36.9. The average age of males, in Janesville, is 35.2 while the average age of females is 38.1. When you compare this to median age of Wisconsin, Janesville is 1.9 years younger.
The median income of individuals, in Janesville, is $25,181 while the average household income is $49,372. When comparing the median income of people living in Janesville to the rest of Wisconsin, the average income in Janesville is $2,726 less.