Keedysville is a town in Washington County, Maryland, United States. The population was 482 as of the 2000 Census. As of 1 July 2008, the U.S. Census Bureau estimated the town's population at 862, a 78.8% increase from 2000.
Keedysville is located at 39°29′19″N 77°41′55″W / 39.48861°N 77.69861°W / 39.48861; -77.69861 (39.488634, -77.698488).
According to the United States Census Bureau, the town has a total area of 0.9 square miles (2.2 km²), all of it land.