Grove City is a city in Franklin County, Ohio, United States, founded in 1852. It is a suburb of Columbus. The population was 41,252 accordi…Grove City is a city in Franklin County, Ohio, United States, founded in 1852. It is a suburb of Columbus. The population was 41,252 according to the 2020 Census. Until the mid-19th century, the area that is now Grove City was a wilderness filled with oak, beech, maple, walnut, dogwood and other trees. The area's first European settler, Hugh Grant, operated a gristmill in Pittsburgh and transported excess goods down the Ohio River for sale, returning to Pittsburgh on foot. On one of these trips, he passed through the Scioto Valley region and in 1803, purchased the land that would become Grove City and returned with his wife Catharine to start a new life.