| Business | Phone |
| Belleville Baby's Keep Well 152 Washington Ave, Belleville 7109 | (973) 450-3394 |
| Belleville Buildings & Grounds 429 Stephens St, Belleville 7109 | (973) 450-3424 |
| Belleville Construction 152 Washington Ave, Belleville 7109 | (973) 450-3409 |
| Belleville Dial A Ride 190 Cortlandt St, Belleville 7109 | (973) 450-3402 |
| Belleville Friendly House 152 Washington Ave, Belleville 7109 | (973) 450-3362 |
| Belleville Municipal Building 152 Washington Ave, Belleville 7109 | (973) 450-3300 |
| Belleville Municipal Clerk 152 Washington Ave, Belleville 7109 | (973) 450-3302 |
| Belleville Purchasing 152 Washington Ave # 3, Belleville 7109 | (973) 450-3316 |
| Belleville Senior Citizens 125 Franklin Ave, Belleville 7109 | (973) 450-3430 |
| Belleville Senior Citizens 125 Mill St, Belleville 7109 | (973) 450-3430 |
| Belleville Shade Tree Dept 429 Stephens St, Belleville 7109 | (973) 450-3419 |
| Belleville Signal Div 117 William St, Belleville 7109 | (973) 450-3425 |
| Belleville Signal Div 152 Washington Ave, Belleville 7109 | (973) 450-3425 |
| Belleville Township Council 152 Washington Ave, Belleville 7109 | (973) 450-3344 |
| Belleville Twp Engineering 152 Washington Ave # 3, Belleville 7109 | (973) 450-3442 |
| Belleville Violations Bureau 152 Washington Ave, Belleville 7109 | (973) 450-3319 |
| Town Manager's Office 152 Washington Ave, Belleville 7109 | (973) 450-3322 |