From a total population of 118,194, Kendall County has a median age of 33.7. The average age of males, in Kendall County, is 33.5 while the average age of females is 34. When you compare this to median age of Illinois, Kendall County is 3.3 years younger.
The median income of individuals, in Kendall County, is $31,110 while the average household income is $83,844. When comparing the median income of people living in Kendall County to the rest of Illinois, the average income in Kendall County is $1,091 more.