The city of Hackettstown (Warren county) is located in the state of New Jersey. The Hackettstown area code is 908. For a local call in Hackettstown you don't have to dial the area code.
If you want to call from Trenton to Hackettstown you have to dial +1 908 and the telephone number of the person you want to reach.
List of Cities located close to Hackettstown:
| Area | Area Code |
|---|---|
| Allamuchy | 908 |
| Port Murray | 908 |
| Schooleys Mountain | 908 |
| Vienna | 908 |
Last change: 23.04.2007