| Business | Phone |
| Building Inspector Alpine Ave, Fishers Island 6390 | (631) 788-7710 |
| Fishers Island Ambulance Squad Po Box 102, Fishers Island 6390 | (631) 788-7618 |
| Fishers Island Bay Constable Po Box 102, Fishers Island 6390 | (631) 788-7047 |
| Fishers Island Board-Appeals Fishers Island 6390 | (631) 788-7793 |
| Fishers Island Cemetery Scrtry Fishers Island 6390 | (631) 788-7099 |
| Fishers Island Ferry District Fishers Island 6390 | (631) 788-7878 |
| Fishers Island Justice 43 Whistler Ave, Fishers Island 6390 | (631) 788-7646 |
| Fishers Island Planning Board Po Box 332, Fishers Island 6390 | (631) 788-7653 |
| Fishers Island Town Constable Madeline Ave, Fishers Island 6390 | (631) 788-7828 |
| Fishers Island Water Plant Po Box E, Fishers Island 6390 | (631) 788-7422 |
| Harbor Master Po Box 102, Fishers Island 6390 | (631) 788-7585 |
| Island Health Project Inc Po Box 344, Fishers Island 6390 | (631) 788-7687 |