Franklin park is located in Somerset county New jersey with a geographic area of 2.6 square miles. The total population in Franklin park is 12,738 with 46.1% male and 53.9% female. Children under age 5 represent 6.1% of the population, under age 18 equal 18.5% of the population and over age 65 is 10.3% of the population. The median household income is $91,352, per capita income is $45,132. There are a total of 5,249 housing units with 60.4% owner occupied. Education includes 17.6% of residents that are high school graduates and 57.4% with a bachelor's degree or higher. The average temperature in Franklin park in the summer is 73 degrees, and in the winter 34 degrees.