Grantville is a city in Coweta County, Georgia, United States. The population was 1,309 at the 2000 census. Census Estimates for 2005 show a population of 2,407.
Grantville is located at 33°14′14″N 84°49′37″W / 33.23722°N 84.82694°W / 33.23722; -84.82694 (33.237252, -84.827059).
According to the United States Census Bureau, the city has a total area of 5.2 square miles (13.5 km2), of which 0.04 square miles (0.10 km2) (0.38%) is water.