From a total population of 118,885, Jefferson County has a median age of 31.9. The average age of males, in Jefferson County, is 30.7 while the average age of females is 33.8. When you compare this to median age of New York, Jefferson County is 6.2 years younger.
The median income of individuals, in Jefferson County, is $23,681 while the average household income is $48,613. When comparing the median income of people living in Jefferson County to the rest of New York, the average income in Jefferson County is $9,148 less.