Following a multi-year planning and development process, we are excited to replace our current website on September 26 with a new design that will serve as a digital gateway to a wide variety of public services and information.


Summaries & Taxpayer Lists

Summary of Assessment & Tax Roll


Top 20 Taxpayers List for Washington County

A&T Performance Measures

Changed Property Ratio (CPR)


Request an A&T Data Report (PDF) (183 KB) 

Other Sources of Information 

DOR (Department of Revenue)

Washington County
Assessment & Taxation Department
155 N. First Ave., Ste. 130 MS 8
Hillsboro, OR 97124 

Phone: (503) 846-8741
Fax: (503) 846-3909
TTY: (503) 846-8601
E-Mail to:

Español al (503) 846-8741.