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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)
3514 Main St
Union Gap, WA 98903
The Post Office is open Monday to Wednesday and on Friday from 8:45 am to 12:30 pm and from 1:30 pm to 5:00 pm. It is closed on Thursday and Saturday and Sunday.