Post Offices List in Woonsocket City, Rhode Island:
| Walnut Hill Post Office | 1500 Diamond Hill Rd Unit M, Woonsocket, RI 02895 |
| Woonsocket Post Office | 127 Social St Ste 1, Woonsocket, RI 02895 |
| Walnut Hill Post Office | 1500 Diamond Hill Rd Unit M, Woonsocket, RI 02895 |
| Woonsocket Post Office | 127 Social St Ste 1, Woonsocket, RI 02895 |