Sunnyside, WA Post Offices
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98944
Post Office Address Phone Hours SUNNYSIDE 713 E EDISON AVE SUNNYSIDE, WA 98944 - 9998 509-837-5039 Mon-Fri 09:00 AM - 05:00 PM Sat Closed Sun Closed SUNNYSIDE CARRIER ANNEX 770 CUSTER AVE SUNNYSIDE, WA 98944 - 9997 509-837-8165