Harrington is located in Washington county Maine with a geographic area of square miles. The total population in Harrington is 933 with 50.2% male and 49.8% female. Children under age 5 represent 4.5% of the population, under age 18 equal 23.4% of the population and over age 65 is 23.0% of the population. The median household income is $59,688, per capita income is $25,635. There are a total of 342 housing units with 82.5% owner occupied. Education includes 27.5% of residents that are high school graduates and 33.3% with a bachelor's degree or higher. The average temperature in Harrington in the summer is 68 degrees, and in the winter 25 degrees.