From a total population of 46,126, Plainfield has a median age of 34. The average age of males, in Plainfield, is 32.4 while the average age of females is 35.8. When you compare this to median age of New Jersey, Plainfield is 5.3 years younger.
The median income of individuals, in Plainfield, is $22,541 while the average household income is $53,099. When comparing the median income of people living in Plainfield to the rest of New Jersey, the average income in Plainfield is $13,818 less.