15 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 40906 | Barbourville | 10,560 |
| 40734 | Gray | 3,633 |
| 40935 | Flat Lick | 1,979 |
| 40771 | Woodbine | 1,702 |
| 40923 | Cannon | 1,012 |
| 40903 | Artemus | 786 |
| 40915 | Bimble | 731 |
| 40943 | Girdler | 675 |
| 40953 | Hinkle | 642 |
| 40982 | Scalf | 454 |
| 40949 | Heidrick | 409 |
| 40997 | Walker | 361 |
| 40921 | Bryants Store | 129 |
| 40995 | Trosper | 68 |
| 40946 | Green Road | 32 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Knox County, Kentucky (US Census).