| Post Office Name | City/State | Address | Phone Number | Action |
|---|---|---|---|---|
| Riverhead Post Office | Riverhead, NY 11901 | 1210 W Main St | 6317271019 | View Details Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 1 Court St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 1096 Route 58 | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 1186 E Main St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 126 E Main St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 1300 Roanoke Ave | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 1446 Flanders Rd | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 1570 Old Country Rd | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 200 Howell Ave | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 200 Route 58 | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 200 Tanger Mall Dr | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 210 Center Dr | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 300 Center Dr | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 300 E Main St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 320 Center Dr | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 4 W 2nd St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 448 Griffing Ave | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 506 E Main St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 535 Pulaski St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 540 E Main St | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 633 Roanoke Ave | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 755 Route 58 | -- | Get Directions |
| Public Collection Box | Riverhead, NY 11901 | 808 E Main St | -- | Get Directions |
