Knox County, Kentucky
Knox County is a county in Kentucky. Its county FIPS code is 21121. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 21121
- Representative coordinates
- 36.888500, -83.855551
- County type
- County
- County seat or government
- Barbourville
- Resident population, July 2025
- 29,532
- Land area
- 1,000.591 km²
- Water area
- 3.676 km²
- State
- Kentucky
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Knox County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
40701 · 40734 · 40759 · 40763 · 40771 · 40903 · 40906 · 40915 · 40921 · 40923 · 40935 · 40939 · 40943 · 40946 · 40949 · 40953 · 40982 · 40995 · 40997
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.