Hartsville is located in Bartholomew county Indiana with a geographic area of 0.3 square miles. The total population in Hartsville is 416 with 49.0% male and 51.0% female. Children under age 5 represent 5.0% of the population, under age 18 equal 30.8% of the population and over age 65 is 14.4% of the population. The median household income is $58,750, per capita income is $20,831. There are a total of 132 housing units with 87.1% owner occupied. Education includes 59.1% of residents that are high school graduates and 9.8% with a bachelor's degree or higher. The average temperature in Hartsville in the summer is 73 degrees, and in the winter 29 degrees.