| Business | Phone |
| Irvington Administration 1 Civic Sq, Irvington 7111 | (973) 399-6622 |
| Irvington Building Inspector 1 Civic Sq, Irvington 7111 | (973) 399-6610 |
| Irvington Engineering 1 Civic Sq, Irvington 7111 | (973) 399-6696 |
| Irvington Housing Dept 1 Civic Sq # 206, Irvington 7111 | (973) 399-6650 |
| Irvington Juvenile Bureau 1 Civic Sq, Irvington 7111 | (973) 399-6552 |
| Irvington License Bureau 13 Civic Sq # 112, Irvington 7111 | (973) 399-6619 |
| Irvington Motorized Equipment 334 16th Ave, Irvington 7111 | (973) 399-6704 |
| Irvington Plumbing Inspector 1 Civic Sq, Irvington 7111 | (973) 399-6608 |
| Irvington Purchasing 1 Civic Sq, Irvington 7111 | (973) 399-6625 |
| Irvington Rent Leveling Board 2 Civic Sq W, Irvington 7111 | (973) 399-6761 |
| Irvington Shade Tree Dept Civic Sq, Irvington 7111 | (973) 399-6693 |
| Irvington Street & Sewer 406 Coit St, Irvington 7111 | (973) 399-6701 |
| Irvington Township Info 1 Civic Sq, Irvington 7111 | (973) 399-8111 |
| Irvington Twp Prosecutor Civic Sq, Irvington 7111 | (973) 399-6595 |
| Irvington Urban Enterprize 1 Civic Sq # 210, Irvington 7111 | (973) 399-5636 |
| Irvington Voter Registration 13 Civic Sq # 116, Irvington 7111 | (973) 399-6797 |
| Planning Board Secretary 1 Civic Sq, Irvington 7111 | (973) 399-6795 |