From a total population of 3,772, Northumberland has a median age of 45.6. The average age of males, in Northumberland, is 42.1 while the average age of females is 49. When you compare this to median age of Pennsylvania, Northumberland is 5.2 years older.
The median income of individuals, in Northumberland, is $26,041 while the average household income is $47,311. When comparing the median income of people living in Northumberland to the rest of Pennsylvania, the average income in Northumberland is $2,871 less.