Information on Boost Mobile in Sunnyside, WA 98944 Outlet Note Regular Brands Boost Mobile Washington Sunnyside 417645 Rating 4.5 based on 100 votes Address 2010 Yakima Valley Hwy Ste B Sunnyside, WA 98944 Phone Hours may vary in different stores. For accurate hours, please contact each store directly. Suite643 Hours may vary in different stores. For accurate hours, please contact each store directly. Nearby Boost Mobile Outlet Boost Mobile Outlet - Sunnyside Boost Mobile Outlet - Sunnyside Boost Mobile Outlet - Sunnyside Boost Mobile Outlet - Sunnyside People Also Viewed