10 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 42701 | Elizabethtown | 53,987 |
| 40160 | Radcliff | 23,624 |
| 40121 | Fort Knox | 8,836 |
| 40162 | Rineyville | 6,180 |
| 42724 | Cecilia | 5,345 |
| 42776 | Sonora | 2,082 |
| 42740 | Glendale | 1,873 |
| 42712 | Big Clifty | 1,714 |
| 42732 | Eastview | 1,541 |
| 42788 | White Mills | 192 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 10 ZCTAs in Hardin County, Kentucky (US Census).