Greencastle is located in Putnam county Indiana with a geographic area of 5.2 square miles. The total population in Greencastle is 10,312 with 48.2% male and 51.8% female. Children under age 5 represent 4.8% of the population, under age 18 equal 17.7% of the population and over age 65 is 15.5% of the population. The median household income is $45,759, per capita income is $20,062. There are a total of 3,604 housing units with 49.5% owner occupied. Education includes 40.1% of residents that are high school graduates and 20.7% with a bachelor's degree or higher. The average temperature in Greencastle in the summer is 74 degrees, and in the winter 29 degrees.
