Portland is located in Cumberland county Maine with a geographic area of 21.5 square miles. The total population in Portland is 66,706 with 48.8% male and 51.2% female. Children under age 5 represent 4.8% of the population, under age 18 equal 15.4% of the population and over age 65 is 15.4% of the population. The median household income is $61,695, per capita income is $38,682. There are a total of 30,796 housing units with 45.2% owner occupied. Education includes 13.1% of residents that are high school graduates and 54.6% with a bachelor's degree or higher. The average temperature in Portland in the summer is 66 degrees, and in the winter 25 degrees.