Sullivan County, Tennessee
Sullivan County, Tennessee | |
|---|---|
Sullivan County Courthouse in Blountville | |
Location within the U.S. state of Tennessee | |
| Coordinates: 36°31′N 82°18′W / 36.51°N 82.3°W | |
| Country | United States |
| State | Tennessee |
| Founded | 1779 |
| Named after | John Sullivan |
| Seat | Blountville |
| Largest city | Kingsport |
| Government | |
| • County Mayor | Richard Venable (R) |
| Area | |
• Total | 430 sq mi (1,100 km2) |
| • Land | 413 sq mi (1,070 km2) |
| • Water | 16 sq mi (41 km2) 3.8% |
| Population (2020) | |
• Total | 158,163 |
• Estimate (2023) | 162,135 |
| • Density | 383/sq mi (148/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional district | 1st |
| Website | sullivancountytn |
Sullivan County is a county located in the U.S. state of Tennessee on its northeast border. As of the 2020 census, the population was 158,163. Its county seat is Blountville. Sullivan County is part of the Kingsport–Bristol TN-VA Metropolitan Statistical Area, which is a component of the Kingsport–Johnson City–Bristol, TN-VA Combined Statistical Area, commonly known as the "Tri-Cities" region. Sullivan is Tennessee's second-oldest county; it was established in 1779 when the area was still part of North Carolina. From 1784 to 1788, it was part of the extra-legal State of Franklin.