From a total population of 115,739, Mercer County has a median age of 43.6. The average age of males, in Mercer County, is 42 while the average age of females is 45.1. When you compare this to median age of Pennsylvania, Mercer County is 3.2 years older.
The median income of individuals, in Mercer County, is $23,195 while the average household income is $43,715. When comparing the median income of people living in Mercer County to the rest of Pennsylvania, the average income in Mercer County is $5,717 less.