| Business | Phone |
| Ackerly Agency Inc 174 W Main St, East Islip 11730 | (631) 581-4776 |
| Marilyn Oberstein Insurance 66 W Main St, East Islip 11730 | (631) 277-7150 |
| Foray Agency Inc 95 E Main St, East Islip 11730 | (631) 581-3400 |
| Gerard Kleinfelder Insurance 220 E Main St, East Islip 11730 | (631) 277-0006 |
| Great South Bay Abstract Inc 86 W Main St, East Islip 11730 | (631) 206-1777 |
| James F Sutton Agency Ltd 149 E Main St, East Islip 11730 | (631) 581-7978 |
| John Potter Real Estate 8 Moffitt Blvd, East Islip 11730 | (631) 581-1109 |
| Southard General Group Inc 146 E Main St, East Islip 11730 | (631) 224-7900 |
| State Farm Insurance 181 E Main St, East Islip 11730 | (631) 581-1200 |