4 days ago · Due to serious weather conditions, Washington County will open inclement weather shelters to anyone seeking shelter beginning Tuesday, February 4 at 2 p.m. Learn more News & Updates

Welcome to the Washington County Department of Assessment & Taxation We’re here to serve our communities by making it simple and straightforward to get the services you need when you need them. Our lobbies are open.

Providing service and support to our community is at the heart of the Washington County mission. Here are links to services and information from Washington County and our partner organizations that allow our community to respond to problems and thrive.

Washington County is structured as a Council-Manager form of government, giving the five-member Board of Commissioners legislative responsibility and designating administrative authority to a Board-appointed professional county administrator.

Information about the land development process in Washington County and links to application and informational handouts regardless of application type or urban/rural designation.

To register a domestic partnership, at least one partner needs to be an Oregon resident. You can register in person or by mail. Register a domestic partnership; How do I record a document? To make sure your document is accepted for recording there are some specific requirements you must meet and fees you must pay. How to record a document

Source for career information and training options in the Greater Portland area (Clackamas, Multnomah, and Washington counties).

The Elections Division administers all Federal, State and local elections in Washington County. We also manage voter registration records for over 400,000 voters, working continuously to ensure that our voter registration rolls are up to date.

List of Washington County service buildings and public parking lot information in Downtown Hillsboro (PDF 659.84 KB)

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