Maps Online

You may view the Washington County assessor tax maps online through one of the following links:


  Individual Property / Taxlot Research Tool.

  View Detailed Maps
  • City Boundaries
  • School District Information
  • Plan Designations
  • Service Districts
  • Aerial Photos
  • Tax Maps


  Survey Records Research Tool.
  Available Items:
  • Records of Survey
  • Subdivision Plats
  • Partition Plats
  • Condominium Plats
  • Geodetic Control Point Sheets
  • Public Land Corner Records
  • Tax Maps


The Oregon State ORMAP site at:

Washington County sends all GIS Data to Metro for the Regional Land Information System.  Metro packages this information for redistribution.  For information regarding Shapefiles or other GIS Data contact Metro directly at 503-797-1742 or by visiting

If you do not have access to these website links, this information may be viewed at our office in the Public Service Area located at 155 N. First Ave., Ste. 130; Hillsboro, OR 97124. Our lobbies are open but to limit the spread of COVID-19, we are encouraging the public to use the alternate option of phone. Please call (503) 846-8871 to discuss your service needs.