Washington
| Company | Category | Area | Address | Web | Contact person | |
| COSTCO WHOLESALE CORPORATION | Ret Misc General Merchandise | Washington | 11831 120TH AVE NE, KIRKLAND, King, Washington, 98034-7108, USA | - | - | - |
| COSTCO WHOLESALE CORPORATION | Ret Misc General Merchandise | Washington | 2310 LONGFIBRE AVE, YAKIMA, Yakima, Washington, 98903-1513, USA | - | - | Jay Moscatelli |
| COSTCO WHOLESALE CORPORATION | Ret Misc General Merchandise | Washington | 2310 LONGFIBRE AVE, YAKIMA, Yakima, Washington, 98903-1513, USA | - | - | Jay Moscatelli |