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Post Offices in Water Mill

Click on the Post Office from this list of 1 Post Offices in Water Mill to view the opening hours, phone number, drop-off times, services and other information.

1. USPS Post Office Water Mill (NY)

670 Montauk Hwy

Water Mill, NY 11976

The Post Office is open Monday to Wednesday and on Friday from 9:00 am to 2:00 pm. It is closed on Thursday and Saturday and Sunday.