| Business | Phone |
| Mahwah City Building Inspector 300 State Rt 17 # B, Mahwah 7430 | (201) 529-4129 |
| Mahwah City Business Adm 300 State Rt 17 # B, Mahwah 7430 | (201) 529-5757 |
| Mahwah City Planning Board 300 State Rt 17 # B, Mahwah 7430 | (201) 529-4130 |
| Mahwah City Treasurer's Office 300 State Rt 17 # B, Mahwah 7430 | (201) 529-2137 |
| Mahwah Township Clerk Office 300 State Rt 17 # B, Mahwah 7430 | (201) 529-3730 |
| Mahwah Twp Treasurer's Office 300 State Rt 17 # B, Mahwah 7430 | (201) 529-4631 |
| Township Hall 475 Corporate Dr, Mahwah 7430 | (201) 529-3730 |