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Post Offices in Black River

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

1. USPS Post Office Black River (NY)
28553 State Route 3
Black River, NY 13612
The Post Office is open Monday to Friday from 8:00 am to 11:00 am and from 12:00 pm to 2:00 pm and on Saturday from 8:00 am to 10:00 am. It is closed on Sunday.