Augusta is located in Kennebec county Maine with a geographic area of 55.1 square miles. The total population in Augusta is 18,662 with 47.5% male and 52.5% female. Children under age 5 represent 4.1% of the population, under age 18 equal 16.7% of the population and over age 65 is 22.7% of the population. The median household income is $38,842, per capita income is $29,095. There are a total of 9,267 housing units with 51.6% owner occupied. Education includes 34.6% of residents that are high school graduates and 27.9% with a bachelor's degree or higher. The average temperature in Augusta in the summer is 68 degrees, and in the winter 25 degrees.