15 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 40906 | Barbourville | 11,665 |
| 40734 | Gray | 3,207 |
| 40935 | Flat Lick | 2,132 |
| 40771 | Woodbine | 1,765 |
| 40915 | Bimble | 905 |
| 40903 | Artemus | 781 |
| 40943 | Girdler | 750 |
| 40923 | Cannon | 625 |
| 40949 | Heidrick | 483 |
| 40982 | Scalf | 408 |
| 40997 | Walker | 347 |
| 40953 | Hinkle | 334 |
| 40921 | Bryants Store | 155 |
| 40946 | Green Road | 55 |
| 40995 | Trosper | 40 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Knox County, Kentucky (US Census).