Washington County | |
|---|---|
 Washington County Courthouse in Jonesborough | |
 Flag  Seal | |
 Location within the U.S. state of Tennessee | |
 Tennessee's location within the U.S. | |
| Coordinates: 36°17′N 82°30′W / 36.29°N 82.5°W | |
| Country |  United States |
| State |  Tennessee |
| Founded | 1777 |
| Named for | George Washington[1] |
| Seat | Jonesborough |
| Largest city | Johnson City |
| Area | |
| • Total | 330 sq mi (900 km2) |
| • Land | 326 sq mi (840 km2) |
| • Water | 3.3 sq mi (9 km2) 1.0% |
| Population (2020) | |
| • Total | 133,001 |
| • Estimate (2023) | 138,420  |
| • Density | 400/sq mi (160/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional district | 1st |
| Website | www |
Washington County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 133,001.[2] Its county seat is Jonesborough.[3] The county's largest city and a regional educational, medical and commercial center is Johnson City. Washington County is Tennessee's oldest county, having been established in 1777 when the state was still part of North Carolina.[4] Washington County is part of the Johnson City, TN Metropolitan Statistical Area, which is a component of the Johnson City–Kingsport–Bristol, TN-VA Combined Statistical Area, commonly known as the "Tri-Cities" region.
- ^ Origins Of Tennessee County Names, Tennessee Blue Book 2005-2006, pages 508-513
- ^ "State & County QuickFacts". United States Census Bureau. Retrieved December 7, 2013.
- ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
- ^ Washington County official website. Retrieved: November 15, 2013.