Cartography

Customer Advisory: COVID-19 Phase 1 Reopening

Effective June 1, 2020 our offices are open for in-person visits using physical distancing. Those who must visit in person are asked to observe the CDC guidelines for keeping a six foot distance from other patrons and wearing facial coverings.

We continue to provide service to our customers remotely. Business can be transacted by phone, email, or online.



The Cartography staff is responsible for tracking ownership of all real property in the County and maintaining a complete set of taxlot maps which adhere to state cadastral mapping standards.  Most documents recorded in the County are reviewed by Cartography to determine if they involve a change in property ownership or property boundary.

Cartography Address
Washington County
Assessment & Taxation Department
Cartography Division
155 N. First Avenue, Suite 200 MS 9
Hillsboro, OR 97124

Phone:  (503) 846-8871
E-Mail to:  at@co.washington.or.us