From a total population of 160,465, Rock County has a median age of 38.8. The average age of males, in Rock County, is 37.6 while the average age of females is 40. When you compare this to median age of Wisconsin, Rock County is roughly the same.
The median income of individuals, in Rock County, is $24,715 while the average household income is $49,645. When comparing the median income of people living in Rock County to the rest of Wisconsin, the average income in Rock County is $3,192 less.