County archives offices maintain records generated by county government including court documents, property records, ordinances, minutes of commissioner meetings, and historical maps that document the county's development over time. There are 2 Archives locations in Washington County, Oregon.

County residents in Washington County conducting property research, legal due diligence, or genealogical investigations should contact the archives office to determine which record types are held locally versus at the state archives, as different agencies may maintain different portions of the historical record.

List of Washington County, Oregon Archives

Washington County Records Archive

View Details Call Now (503) 846-8751

Washington County Records Archive

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Hillsboro Records Archive

View Details Call Now (503) 681-6190

Hillsboro Records Archive

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Residents of Washington County can submit public records requests in writing to the county archives office and should include a specific description of the records sought, the time period, and the purpose of the request if relevant. Many counties have moved to online request portals to streamline the FOIA and public records request process.

You may also find Archives locations in neighboring counties including Clackamas, Washington, Multnomah.