Jonesborough
- County:
- Washington County
- County Seat:
- Yes
- Area (mi²):
- 5.324
- State:
- Tennessee
Jonesborough is a town located in Washington County, Tennessee. Jonesborough has a 2026 population of 6,746. It is also the county seat of Washington County. Jonesborough is currently growing at a rate of 3.98% annually and its population has increased by 14.03% since the most recent census, which recorded a population of 5,916 in 2020.