| Post Office | North Kingstown |
| Division | Washington |
| Pincode | 2852 |
| Post Office | Westerly |
| Division | Washington |
| Pincode | 2891 |
| Post Office | Wakefield |
| Division | Washington |
| Pincode | 2879 |
| Post Office | Narragansett |
| Division | Washington |
| Pincode | 2882 |
| Post Office | Charlestown |
| Division | Washington |
| Pincode | 2813 |
| Post Office | Kingston |
| Division | Washington |
| Pincode | 2881 |
22 City in Washington | List of Zip Codes Location In Rhode Island and Your selected County Washington