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Post Offices in Union Gap

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

1. USPS Post Office Union Gap (WA)

Union Gap, WA 98903

The Post Office is open Monday to Friday from 8:45 am to 12:30 pm and from 1:30 pm to 5:00 pm. It is closed Saturday and Sunday.