Greenville County, South Carolina, USA

Greenville County is located in northwestern South Carolina and is the most populous county in the state, with an estimated 583,125 residents in 2025. The city of Greenville is the county seat and the center of a growing metropolitan area that also includes communities such as Greer, Mauldin, Simpsonville, Travelers Rest and Fountain Inn. The county extends from the foothills of the Blue Ridge Mountains to the more urbanized Interstate 85 corridor and includes a mix of cities, suburbs, small towns and rural areas. Greenville County is a major center for manufacturing, health care, education, logistics and professional services in South Carolina’s Upstate region. County government provides services including courts, elections, law enforcement, emergency management, road and bridge maintenance, planning, parks and public works.