From a total population of 21,143, North Plainfield has a median age of 36.3. The average age of males, in North Plainfield, is 35.2 while the average age of females is 36.8. When you compare this to median age of New Jersey, North Plainfield is 3.0 years younger.
The median income of individuals, in North Plainfield, is $28,287 while the average household income is $69,363. When comparing the median income of people living in North Plainfield to the rest of New Jersey, the average income in North Plainfield is $8,072 less.