Linden is located in Union county New jersey with a geographic area of 10.7 square miles. The total population in Linden is 42,332 with 48.1% male and 51.9% female. Children under age 5 represent 5.7% of the population, under age 18 equal 21.0% of the population and over age 65 is 14.6% of the population. The median household income is $75,084, per capita income is $31,500. There are a total of 14,728 housing units with 59.9% owner occupied. Education includes 31.7% of residents that are high school graduates and 23.7% with a bachelor's degree or higher. The average temperature in Linden in the summer is 72 degrees, and in the winter 32 degrees.