| Business | Phone |
| South Plainfield Adm 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7602 |
| South Plainfield Assessing 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7623 |
| South Plainfield Borough Office 2480 Plainfield Ave, South Plainfield 7080 | (908) 754-9000 |
| South Plainfield Building Dept 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7640 |
| South Plainfield Clerk 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7606 |
| South Plainfield Emer Mgmt 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7718 |
| South Plainfield Engineering 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7635 |
| South Plainfield Planning Brd 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7641 |
| South Plainfield Recycling 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7621 |
| South Plainfield Violations 2480 Plainfield Ave, South Plainfield 7080 | (908) 226-7651 |