334 SE Fifth Ave, Hillsboro, OR USA 97123 (503) 648-1102 - Fax: (503) 681-0535 Mission Statement: To promote business prosperity and a healthy community by providing information, services and advocacy for its members. The Hillsboro/Washington County Map is now being prepared.. Call us if you would like your company included. HILLSBORO/WASHINGTON COUNTY MAP Helpful Links 05/31/02 ...