Water Mill Post Office

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The United States Postal Service branch in Water Mill is located in the hamlet center on Montauk Highway. Parking is available on the street or behind the post office. The streetside mailboxes offer customer convenience, and the facility has post offices boxes available, as well.
670 Montauk Hwy, Water Mill, NY 11976
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  • Fax: 631-726-6742
  • Hours: Window: Mon - Fri, 9am - 5pm, Sat, 9am - 1pm; Sun, closed. Lobby: Mon - Fri, 6:30am - 5:30pm; Sat, 6:30am - 3pm; Sun, closed
  • Accessible: yes
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