Sisseton is located in Roberts county South dakota with a geographic area of 1.6 square miles. The total population in Sisseton is 2,539 with 50.3% male and 49.7% female. Children under age 5 represent 7.6% of the population, under age 18 equal 25.9% of the population and over age 65 is 17.7% of the population. The median household income is $38,516, per capita income is $22,224. There are a total of 1,054 housing units with 41.9% owner occupied. Education includes 31.0% of residents that are high school graduates and 17.8% with a bachelor's degree or higher. The average temperature in Sisseton in the summer is 70 degrees, and in the winter 15 degrees.
