Warren is located in Knox county Maine with a geographic area of square miles. The total population in Warren is 4,775 with 64.6% male and 35.4% female. Children under age 5 represent 4.1% of the population, under age 18 equal 14.8% of the population and over age 65 is 8.7% of the population. The median household income is $63,781, per capita income is $24,801. There are a total of 1,497 housing units with 95.8% owner occupied. Education includes 46.5% of residents that are high school graduates and 24.4% with a bachelor's degree or higher. The average temperature in Warren in the summer is 68 degrees, and in the winter 25 degrees.