Washington County, Tennessee

Washington County
Washington County Courthouse in Jonesborough
Washington County Courthouse in Jonesborough
Flag of Washington County
Official seal of Washington County
Map of Tennessee highlighting Washington County
Location within the U.S. state of Tennessee
Map of the United States highlighting Tennessee
Tennessee's location within the U.S.
Coordinates: 36°17′N 82°30′W / 36.29°N 82.5°W / 36.29; -82.5
Country United States
State Tennessee
Founded1777
Named forGeorge Washington[1]
SeatJonesborough
Largest cityJohnson City
Area
 • Total330 sq mi (900 km2)
 • Land326 sq mi (840 km2)
 • Water3.3 sq mi (9 km2)  1.0%
Population
 (2020)
 • Total133,001
 • Estimate 
(2023)
138,420 Increase
 • Density400/sq mi (160/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district1st
Websitewww.washingtoncountytn.org

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–KingsportBristol, TN-VA Combined Statistical Area, commonly known as the "Tri-Cities" region.

  1. ^ Origins Of Tennessee County Names, Tennessee Blue Book 2005-2006, pages 508-513
  2. ^ "State & County QuickFacts". United States Census Bureau. Retrieved December 7, 2013.
  3. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  4. ^ Washington County official website. Retrieved: November 15, 2013.