Tanasbourne is a populated place LOCATED WITHIN the City of Hillsboro. In turn, the City of Hillsboro is located within Washington County.
Tanasbourne is located at latitude 45.539 and longitude -122.865.
Since Tanasbourne is located within the City of Hillsboro, all of the census and demographic data for residents of Tanasbourne are included as part of the information reported for City of Hillsboro in the "Profile" tab above.