Franklin County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 1,323,807, making it the most populous county in Ohio. Most of its land area is taken up by its county seat, Columbus, the state capital and most populous city in Ohio. The county was established on April 30, 1803, less than two months after Ohio became a state, and was named after Benjamin Franklin. Originally, Franklin County extended north to Lake Erie before it was subdivided into smaller counties. Franklin County is the central county of the Columbus, Ohio Metropolitan Statistical Area.

Franklinton is a neighborhood in Columbus, Ohio, just west of its downtown. Settled in 1797, Franklinton is the first American settlement in Franklin County, and was the county seat until 1824. As the city of Columbus grew, the city annexed and incorporated the existing settlement in 1859. Franklinton is bordered by the Scioto River on the north and east, Harmon Avenue on the east, Stimmel Road and Greenlawn Avenue on the south, and Interstate 70 on the west. Its main thoroughfare is West Broad Street, one of the city's two main roads.