Greencastle is a city located in Indiana. With a 2020 population of 10,700, it is the 74th largest city in Indiana and the 2948th largest city in the United States. Greencastle is currently growing at a rate of 0.80% annually and its population has increased by 3.62% since the most recent census, which recorded a population of 10,326 in 2010. Spanning over 5 miles, Greencastle has a population density of 2,041 people per square mile.
The average household income in Greencastle is $56,057 with a poverty rate of 13.85%. The median rental costs in recent years comes to $765 per month, and the median house value is $100,000. The median age in Greencastle is 28.9 years, 25.2 years for males, and 31.1 years for females. For every 100 females there are 83.8 males.