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Post Offices in Prosser

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

1. USPS Post Office Prosser (WA)

Prosser, WA 99350

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