| Business | Phone |
| Mary's Roman Catholic Church 20 Harrison Ave, East Islip 11730 | (631) 581-7070 |
| Christian Reformed Church 391 E Main St, East Islip 11730 | (631) 581-8188 |
| Saint Stephens Anglican Church 129 Country Village Ln, East Islip 11730 | (631) 277-4271 |