Mammoth Cave zipcode
| City | Mammoth Cave |
| ZIP Code | 42259 |
| Type | Standard |
| State Code | KY |
| State | Kentucky |
ZIP code of Mammoth Cave is 42259. This place is located in Kentucky state in US. To send any postal service to Mammoth Cave, you must use 42259 zipcode.
The ZIP code 42259 is also used with 2 more city names of Kentucky.
- Mammoth Cave National Park, KY
- Ollie, KY