From a total population of 15,224, Marquette County has a median age of 48.2. The average age of males, in Marquette County, is 47.5 while the average age of females is 48.9. When you compare this to median age of Wisconsin, Marquette County is 9.4 years older.
The median income of individuals, in Marquette County, is $23,914 while the average household income is $46,875. When comparing the median income of people living in Marquette County to the rest of Wisconsin, the average income in Marquette County is $3,993 less.