South Carolina's 3rd congressional district is a congressional district in western South Carolina bordering both Georgia and North Carolina. It includes all of Abbeville, Anderson, Edgefield, Greenwood, Laurens, McCormick, Oconee, Pickens, and Saluda counties and portions of Greenville and Newberry counties. The district is mostly rural, but much of the economy revolves around the manufacturing centers of Anderson and Greenwood. With a Cook Partisan Voting Index rating of R+21, it is the most Republican district in South Carolina.

Abbeville County is a county located in the U.S. state of South Carolina. As of the 2020 census, its population was 24,295. Its county seat is Abbeville. It is the first county in the United States alphabetically. Abbeville County included in the Greenville-Spartanburg-Anderson, SC Combined Statistical Area, known colloquially as the Upstate or the Upcountry.