Fairmont is located in Martin county Minnesota with a geographic area of 15.0 square miles. The total population in Fairmont is 10,042 with 51.1% male and 48.9% female. Children under age 5 represent 5.0% of the population, under age 18 equal 19.4% of the population and over age 65 is 23.7% of the population. The median household income is $49,402, per capita income is $31,063. There are a total of 4,695 housing units with 66.2% owner occupied. Education includes 31.4% of residents that are high school graduates and 25.3% with a bachelor's degree or higher. The average temperature in Fairmont in the summer is 71 degrees, and in the winter 9 degrees.