Franklin is a home rule-class city in and the county seat of Simpson County, Kentucky, United States. The county is located on the south central border of the state, and its population was 8,408 at the 2010 census.
Kentucky Downs, formerly known as Dueling Grounds Racetrack (owned by Corey Johnsen & Ray Reid), is located in Franklin on the Kentucky–Tennessee border. Kentucky Downs hosts the Kentucky Cup Turf Festival, a full card of world-class horse racing featuring four major turf stakes. Kentucky Downs also hosts year-round simulcasts for the Kentucky-Tennessee market.
Franklin was formally incorporated by the state assembly on November 2, 1820, on a 62-acre (250,000 m2) tract of land. This tract was purchased from William Hudspeth and was named for Founding Father Benjamin Franklin. The post office was established on September 29, 1822, with Robert W. Simpson as postmaster.
On March 1, 1968, Johnny Cash and June Carter Cash were married at the Franklin First United Methodist church by Reverend Leslie Chapman.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Franklin has a humid subtropical climate, abbreviated "Cfa" on climate maps.
Franklin is located at 36°43′21″N 86°34′39″W (36.722487, -86.577566).
According to the United States Census Bureau, the city has a total area of 7.4 square miles (19 km2), all land.