| Business | Phone |
| Aid To The Developmentally Inc 877 E Main St, Riverhead 11901 | (631) 727-6220 |
| Feingold Association Of Ny 540 E Main St, Riverhead 11901 | (631) 369-9340 |
| Open Arms Care Center Inc 1018 Northville Tpke, Riverhead 11901 | (631) 727-6943 |
| Polish Town Civic Assoc Hdqrs 300 Lincoln St, Riverhead 11901 | (631) 369-1616 |
| Suffolk County Historical Soc 300 W Main St, Riverhead 11901 | (631) 727-2881 |
| Timothy Hill Children's Ranch 298 Middle Rd, Riverhead 11901 | (631) 369-1234 |