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Departments

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Washington County's departments and their organizations
This office is directed by an elected County Auditor and conducts performance audits and special studies that provide accountability to the public and improve Washington County programs, services and operations.
Washington County is structured as a Council-Manager form of government, giving the five-member, elected Board of County Commissioners legislative responsibility and designating administrative authority to a Board-appointed professional county administrator.
This office provides legal advice and represents the Washington County government and affiliated agencies in civil litigation, administrative and enforcement proceedings.
This division of the Department of Assessment and Taxation is responsible for conducting all federal, state and local elections in Washington County. In addition, the division maintains voter registration records, verifies petitions and establishes and maintains precincts and election boards.
This division of the Department of Human Resources works to minimize the effects of major emergencies and disasters on the community.
Westside Commons, home of the annual Washington County Fair, is a multi-use campus located in Hillsboro, Oregon, that is dedicated to serving the entire community by hosting and producing national-class events on a local scale.
This department manages the accounting system and financial records of the County and reports on the County’s fiscal affairs.
This office provides safe, dependable, cost-effective vehicles and equipment used to support Washington County services.
This department is the centralized provider of support and strategic leadership for technology serving all Washington County programs, offices and departments.
This court is directed by an elected Justice of the Peace and has jurisdiction over most violations of the State Motor Vehicle Code and over certain misdemeanor offenses. The court also has jurisdiction over civil and small claims for money and damages not exceeding $10,000.
This department protects the public by reducing delinquency and restores victims and the community by holding youth accountable. The Juvenile Department creates opportunities for change through swift and decisive use of effective practices, building on the strengths of youth and families.
This office provides free access to print and digital collections of statutes, case law, subject treatises covering state and federal jurisdictions and historical Oregon legislative materials.
This office provides funding for public library operations, central support and outreach services for the libraries who serve the people of Washington County.
This office provides guidance for sustainable best practices and supports work to reduce the County's footprint.
The District 18 Watermaster’s Office is a field office of the Oregon Water Resources Department (OWRD), in cooperation with Washington County, and is responsible for water supply management within the Tualatin, Lake Oswego and Lower Willamette Drainage Basins.
Westside Commons, home of the annual Washington County Fair, is a multi-use campus located in Hillsboro, Oregon, that is dedicated to serving the entire community by hosting and producing national-class events on a local scale.