Washington County, Oregon MUSEUMS Washington County, Oregon MUSEUMS Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City Rice NW Museum of Rocks & Minerals _ 26385 NW Groveland Dr.Hillsboro, OR 97124 (503) 647-2418 Learn More | Visit Site | Show on Map Five Oaks Museum _ 17677 NW Springville RdPortland, OR 97229 (503) 645-5353 Learn More | Visit Site | Show on Map If your business isn't here, contact us today to get listed!