Gardiner is located in Kennebec county Maine with a geographic area of 15.7 square miles. The total population in Gardiner is 5,670 with 49.3% male and 50.7% female. Children under age 5 represent 5.8% of the population, under age 18 equal 20.9% of the population and over age 65 is 17.0% of the population. The median household income is $52,545, per capita income is $32,594. There are a total of 2,346 housing units with 64.7% owner occupied. Education includes 32.7% of residents that are high school graduates and 26.0% with a bachelor's degree or higher. The average temperature in Gardiner in the summer is 66 degrees, and in the winter 25 degrees.
