Washington County, Tennessee
County seat: Jonesborough · Population 141,199 (2025) · 327 sq mi
Washington County is the 12th most populous of Tennessee's 95 counties, with 141,199 people (2025 estimate). Its county seat is Jonesborough. It is part of the East Tennessee region, one of the 3 Grand Divisions of Tennessee. The map shows its 3 cities and towns and the 5 neighboring counties.
Washington County facts
- County seat
- Jonesborough
- Population (2025 estimate)
- 141,199 +6.2% since 2020
- Land area
- 327 sq mi 68th largest of 95
- Water area
- 3 sq mi
- Population density
- 432 per sq mi
- Established
- 1777
- Same name
- One of 30 Washington Counties in the US
- Named after
- George Washington Founding Father and first U.S. president (1732–1799)
- Largest city
- Johnson City 72,680 in the county
- Median household income
- $62,809
- Cities and towns
- 3 plus 6 CDPs
- ZIP codes
- 13
- Time zone
- Eastern
- FIPS code
- 47179
Cities and towns in Washington County
Washington County has 3 incorporated cities, towns and villages. Populations count the people living inside Washington County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Johnson City | City | 72,680 | Carter and Sullivan counties |
| Jonesborough (county seat) | Town | 6,990 | |
| Watauga | City | 0 | Carter County |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Oak Grove | 4,626 | |
| Spurgeon | 2,517 | Sullivan County |
| Gray | 2,237 | |
| Embreeville | 1,062 | |
| Fall Branch | 960 | Greene County |
| Telford | 731 |
ZIP codes in Washington County
13 ZIP codes reach into Washington County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 37601 also Carter and Unicoi counties
- 37604 also Carter County
- 37614
- 37615
- 37641 also Greene County
- 37650 also Unicoi County
- 37656 also Greene and Sullivan counties
- 37659 also Sullivan County
- 37663 also Sullivan County
- 37681 also Greene County
- 37686 also Sullivan County
- 37690
- 37694 also Carter and Sullivan counties
Population of Washington County, 2020–2025
Washington County grew by 8,200 people (+6.2%) between April 2020 and July 2025: 2,912 more deaths than births and a net gain of 10,755 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 133,211 |
| 2021 | 133,461 |
| 2022 | 136,273 |
| 2023 | 138,454 |
| 2024 | 139,574 |
| 2025 | 141,199 |
Neighboring counties
- Greene County west · 73,831 people
- Sullivan County northeast · 163,759 people
- Unicoi County south · 17,856 people
- Carter County east · 57,361 people
- Hawkins County northwest · 59,559 people
Printable Washington County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (102 KB)
- PNG (2400 px) (96 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
Back to the Tennessee county map with all 95 counties. Found an error? Tell us.