| Business | Phone |
| Little Pt Friar Episcopal 48 Old Post Rd, Mt Sinai 11766 | (631) 473-0553 |
| Mt Sinai Congregational Church 233 N Country Rd, Mt Sinai 11766 | (631) 473-1582 |
| Gospel Revivals 15 Myrtle St, Mt Sinai 11766 | (631) 331-5108 |
| Jehovah's Witnesses Kingdom N Country Rd, Mt Sinai 11766 | (631) 928-6330 |