COUNTY · TN
Washington County, Tennessee
Washington County is a county in Tennessee with FIPS code 47179 and an estimated population of 138,420 (Census 2023), 12th largest of 95 in the state.
County facts
- Name
- Washington County
- State
- Tennessee
- Type
- county
- FIPS code
- 47179
- State FIPS
- 47
- Population (2023)
- 138,420
- Change since 2020
- +3.9%
- State rank
- 12 of 95
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Washington County?
Washington County, Tennessee has the five-digit FIPS code 47179: 47 for the state and 179 for the county.
What state is Washington County in?
Washington County is in Tennessee.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.