Union township is located in Union county New jersey with a geographic area of 0.3 square miles. The total population in Union township is 5,688 with 46.7% male and 53.3% female. Children under age 5 represent 2.8% of the population, under age 18 equal 19.0% of the population and over age 65 is 18.1% of the population. The median household income is $109,577, per capita income is $43,568. There are a total of 1,751 housing units with 89.9% owner occupied. Education includes 15.3% of residents that are high school graduates and 62.1% with a bachelor's degree or higher. The average temperature in Union township in the summer is 73 degrees, and in the winter 34 degrees.
