Gettysburg is located in Potter county South dakota with a geographic area of 1.9 square miles. The total population in Gettysburg is 1,273 with 50.2% male and 49.8% female. Children under age 5 represent 5.3% of the population, under age 18 equal 24.5% of the population and over age 65 is 23.6% of the population. The median household income is $58,088, per capita income is $29,597. There are a total of 546 housing units with 79.5% owner occupied. Education includes 29.9% of residents that are high school graduates and 26.9% with a bachelor's degree or higher. The average temperature in Gettysburg in the summer is 69 degrees, and in the winter 15 degrees.