| Business | Phone |
| Allstate Insurance 270 Smithtown Blvd, Nesconset 11767 | (631) 981-7000 |
| Central Island Insurance Agcy 287 Smithtown Blvd # A, Nesconset 11767 | (631) 981-8844 |
| Nesconset Brokerage Inc 309 Smithtown Blvd, Nesconset 11767 | (631) 737-9393 |
| Gobes Insurance 257 Smithtown Blvd, Nesconset 11767 | (631) 265-6631 |
| State Farm Insurance 279 Smithtown Blvd # 6, Nesconset 11767 | (631) 981-6969 |
| Usaa Po Box 165, Nesconset 11767 | (631) 584-3647 |