Chatham is located in Morris county New jersey with a geographic area of 2.3 square miles. The total population in Chatham is 8,729 with 49.0% male and 51.0% female. Children under age 5 represent 6.0% of the population, under age 18 equal 32.0% of the population and over age 65 is 11.2% of the population. The median household income is $201,923, per capita income is $85,817. There are a total of 2,856 housing units with 82.6% owner occupied. Education includes 5.0% of residents that are high school graduates and 80.1% with a bachelor's degree or higher. The average temperature in Chatham in the summer is 73 degrees, and in the winter 34 degrees.