Hartford is a city in Ohio County, Kentucky, United States. The population was 2,571 at the 2000 census. It is the county seat of Ohio County. It is believed to be named for a deer crossing on the nearby Rough River.
The former two-year Hartford College existed on East Union Street at the site of the current Ohio County School Board administrative office.
Hartford is located at 37°27′1″N 86°54′7″W / 37.45028°N 86.90194°W / 37.45028; -86.90194 (37.450415, -86.902026).