From a total population of 23,844, Fairfax has a median age of 39. The average age of males, in Fairfax, is 37.8 while the average age of females is 40. When you compare this to median age of Virginia, Fairfax is 1.4 years older.
The median income of individuals, in Fairfax, is $44,747 while the average household income is $100,584. When comparing the median income of people living in Fairfax to the rest of Virginia, the average income in Fairfax is $10,789 more.