COUNTY · TN
Knox County, Tennessee
Knox County is a county in Tennessee with FIPS code 47093 and an estimated population of 500,669 (Census 2023), 3rd largest of 95 in the state.
County facts
- Name
- Knox County
- State
- Tennessee
- Type
- county
- FIPS code
- 47093
- State FIPS
- 47
- Population (2023)
- 500,669
- Change since 2020
- +4.2%
- State rank
- 3 of 95
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Knox County
Other counties in Tennessee
Questions
What is the FIPS code for Knox County?
Knox County, Tennessee has the five-digit FIPS code 47093: 47 for the state and 093 for the county.
What state is Knox County in?
Knox 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.