From a total population of 16,778, Onalaska has a median age of 37.9. The average age of males, in Onalaska, is 37.5 while the average age of females is 38.4. When you compare this to median age of Wisconsin, Onalaska is 0.9 years younger.
The median income of individuals, in Onalaska, is $31,113 while the average household income is $53,813. When comparing the median income of people living in Onalaska to the rest of Wisconsin, the average income in Onalaska is $3,206 more.