Map for Washington County Chamber of Commerce Map for Washington County Chamber of Commerce Search | Advanced Search | New Members | Coupons and Discounts | All Categories Family, Community & Non-Profit >> CHAMBERS OF COMMERCE Washington County Chamber of Commerce 5193 NE Elam Young Pkwy., Suite AHillsboro, OR 97124 | directions 5034734486 | fax: (503) 681-0535 Visit Site If your business isn't here, contact us today to get listed!