Arlington is located in Kingsbury county South dakota with a geographic area of 1.7 square miles. The total population in Arlington is 1,007 with 47.1% male and 52.9% female. Children under age 5 represent 9.1% of the population, under age 18 equal 23.7% of the population and over age 65 is 18.5% of the population. The median household income is $55,125, per capita income is $26,671. There are a total of 437 housing units with 64.1% owner occupied. Education includes 38.0% of residents that are high school graduates and 34.3% with a bachelor's degree or higher. The average temperature in Arlington in the summer is 70 degrees, and in the winter 15 degrees.