| Business | Phone |
| Garret Mountain Reservation 311 Pennsylvania Ave, Paterson 7503 | (973) 881-4994 |
| County Administration Bldg 401 Grand St, Paterson 7505 | (973) 881-4000 |
| County-Passaic Admin Bldg 401 Grand St # 101, Paterson 7505 | (973) 881-4480 |
| County-Passaic Admin Bldg 401 Grand St, Paterson 7505 | (973) 881-4480 |
| Superintendents Elections Office 317 Pennsylvania Ave # 103, Paterson 7503 | (973) 881-4515 |
| Passaic County Adjuster 401 Grand St # 517, Paterson 7505 | (973) 881-4840 |
| Passaic County Administrator 401 Grand St # 205, Paterson 7505 | (973) 881-4405 |
| Passaic County Brd-Freeholders 401 Grand St # 223, Paterson 7505 | (973) 881-4402 |
| Passaic County Counsel 401 Grand St # 214, Paterson 7505 | (973) 881-4466 |
| Passaic County Election 401 Grand St, Paterson 7505 | (973) 881-4127 |
| Passaic County Engineer 401 Grand St # 524, Paterson 7505 | (973) 881-4456 |
| Passaic County Family Courts 63 Hamilton St, Paterson 7505 | (973) 881-4017 |
| Passaic County Fraud 80 Hamilton St, Paterson 7505 | (973) 881-8590 |
| Passaic County Home Energy 80 Hamilton St # 25, Paterson 7505 | (973) 881-2550 |
| Passaic County Naturalization 401 Grand St # 130, Paterson 7505 | (973) 881-4337 |
| Passaic County Payroll Dept 401 Grand St # 439, Paterson 7505 | (973) 881-4524 |
| Passaic County Planning Board 401 Grand St # 506, Paterson 7505 | (973) 881-4490 |
| Passaic County Procurement Center 495 River St # 2, Paterson 7524 | (973) 881-4353 |
| Passaic County Prosecutor's 401 Grand St # 7, Paterson 7505 | (973) 881-4800 |
| Passaic County Public Building 65 Columbia Ave, Paterson 7503 | (973) 881-4425 |
| Passaic County Public Housing 100 Hamilton Plz # 510, Paterson 7505 | (973) 881-4369 |
| Passaic County Register-Deeds 401 Grand St # 113, Paterson 7505 | (973) 881-4777 |
| Passaic County Register-Deeds 77 Hamilton St, Paterson 7505 | (973) 881-4777 |
| Passaic County Special Civil 71 Hamilton St, Paterson 7505 | (973) 247-8179 |
| Passaic County Surrogate's Ct 77 Hamilton St # 101, Paterson 7505 | (973) 881-4760 |
| Passaic County Traffic Engr 401 Grand St # 524, Paterson 7505 | (973) 881-4453 |