File:Oldknoxcourthouse.JPG · Wikimedia Commons · See Wikimedia Commons
Knox County
Sign in to saveAlso known as Knox County, Tennessee, Knox County, TN
county in Tennessee, United States
Key facts
- Country
- United States
- State
- Tennessee
- Founded
- June 15, 1792
- Named after
- Henry Knox
- Seat
- Knoxville
- Largest city
- Knoxville
- Mayor
- Glenn Jacobs ( R )
- Total
- 526 sq mi (1,360 km )
- Land
- 508 sq mi (1,320 km )
- Water
- 18 sq mi (47 km ) 3.5%
- Estimate 2025
- 511,453
- Density
- 943/sq mi (364/km )
- Congressional district
- 2nd
- Website
- knoxcounty .org
via Wikipedia infobox
Wikidata facts
- Named after
- Henry Knox
- Country
- United States
- Located in
- Tennessee
- Contains
- Knoxville
- Capital
- Knoxville
- Population
- 478971
- Area
- 1362
- Time zone
- Eastern Time Zone
- Shares border with
- Anderson County
- Headquarters
- Knoxville
- Official website
- knoxcounty.org
- Image
- Oldknoxcourthouse.JPG
- Households
- 189536
Show 11 more facts
- water as percent of area
- 3.5
- native label
- Knox County
- Commons category
- Knox County, Tennessee
- topic's main category
- Category:Knox County, Tennessee
- inception
- 1792-06-11
- different from
- Knox County
- category for people born here
- Category:Births in Knox County, Tennessee
- category of associated people
- Category:People from Knox County, Tennessee
- social media followers
- 13071
- per capita income
- 34338
- P8168
- Johann Georg Tralles
Sources (10)
via Wikidata · CC0
~20 min read
Encyclopedic overview
Knox County is a county located in the U.S. state of Tennessee. The population was 511,453 as of a 2025 estimate, making it the third-most populous county in Tennessee. Its county seat is Knoxville, which is the third-most populous city in Tennessee. Knox County is included in the Knoxville metropolitan area. The county is located at the geographical center of the Great Valley of East Tennessee. Near the heart of the county is the origin of the Tennessee River, at the confluence of the Holston and French Broad rivers.
History
Excerpted from Wikipedia’s “Knox County” article, available under the CC BY-SA 4.0 licence.