From a total population of 292,026, Winnebago County has a median age of 38.9. The average age of males, in Winnebago County, is 37.9 while the average age of females is 40.1. When you compare this to median age of Illinois, Winnebago County is 1.9 years older.
The median income of individuals, in Winnebago County, is $24,802 while the average household income is $47,523. When comparing the median income of people living in Winnebago County to the rest of Illinois, the average income in Winnebago County is $5,217 less.