509 State Route 13 Williamstown, NY 13493
Phone: 315-964-2412
| Post Office Lobby Hours | |
|---|---|
| Monday | 7:00am - 6:00pm |
| Tuesday | 7:00am - 6:00pm |
| Wednesday | 7:00am - 6:00pm |
| Thursday | 7:00am - 6:00pm |
| Friday | 7:00am - 6:00pm |
| Saturday | 7:00am - 6:00pm |
| Sunday | Closed |
Mailboxes in Williamstown
Postage Stamps in Williamstown
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Williamstown Post Office is a United States Postal Service (USPS) facility in Williamstown, NY. This post office offers a full array of services, including package delivery and first class mail.