Summit is located in Union county New jersey with a geographic area of 6.0 square miles. The total population in Summit is 21,913 with 47.7% male and 52.3% female. Children under age 5 represent 7.9% of the population, under age 18 equal 28.0% of the population and over age 65 is 14.2% of the population. The median household income is $142,845, per capita income is $87,019. There are a total of 7,734 housing units with 71.4% owner occupied. Education includes 12.5% of residents that are high school graduates and 73.1% with a bachelor's degree or higher. The average temperature in Summit in the summer is 72 degrees, and in the winter 34 degrees.
