Hartford is located in Minnehaha county South dakota with a geographic area of 2.7 square miles. The total population in Hartford is 3,300 with 46.5% male and 53.5% female. Children under age 5 represent 9.7% of the population, under age 18 equal 27.2% of the population and over age 65 is 16.1% of the population. The median household income is $80,874, per capita income is $34,563. There are a total of 1,342 housing units with 69.0% owner occupied. Education includes 22.5% of residents that are high school graduates and 29.8% with a bachelor's degree or higher. The average temperature in Hartford in the summer is 70 degrees, and in the winter 15 degrees.