From a total population of 20,557, Summit has a median age of 36.7. The average age of males, in Summit, is 35.2 while the average age of females is 38.2. When you compare this to median age of New Jersey, Summit is 2.6 years younger.
The median income of individuals, in Summit, is $32,327 while the average household income is $54,499. When comparing the median income of people living in Summit to the rest of New Jersey, the average income in Summit is $4,032 less.