| Business | Phone |
| East Islip Senior Citizens 50 Irish Ln, East Islip 11730 | (631) 224-5396 |
| Islip Bay Marinas & Docks 50 Irish Ln, East Islip 11730 | (631) 224-5648 |
| Islip Council Of The Arts 50 Irish Ln, East Islip 11730 | (631) 224-5420 |
| Islip Cultural Affairs 50 Irish Ln, East Islip 11730 | (631) 224-5430 |
| Islip Food Commissary 100 Carleton Ave, East Islip 11730 | (631) 224-5339 |
| Islip Safety Office 100 Carleton Ave, East Islip 11730 | (631) 224-5636 |
| Islip Special Events 50 Irish Ln, East Islip 11730 | (631) 224-5407 |
| Islip Sports & Athletics Office 50 Irish Ln, East Islip 11730 | (631) 224-5404 |
| South Shore Nature Center Bayview Ave, East Islip 11730 | (631) 224-5436 |