Oregon, county records

Washington County, Oregon Public Records

Find the right office in Washington County. Court cases, deeds and parcels, sheriff and jail records, vital records and county filings, each linked to the office that keeps them.

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Most requested Washington County records

Every card below goes to the government office responsible for that record. Use the category buttons to narrow the list.

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Showing 12 official sources

Official

Police & jail

Washington County Sheriff Civil Unit

Washington County Sheriff Civil Unit, the elected county law enforcement office, with incident reports, warrants and jail information as the office publishes them.

washingtoncountyor.gov
Open official site Washington County Sheriff Civil Unit
Official

Vital records

Washington County Birth Records

Washington County Birth Records, the office that issues these certificates, with the application, identification and fee rules it publishes.

washingtoncountyor.gov
Open official site Washington County Birth Records
Official

State records

Washington County Domestic Partnerships

Washington County Domestic Partnerships: Domestic Partnership applications, forms and instructions, on the official site of the office that keeps it.

washingtoncountyor.gov
Open official site Washington County Domestic Partnerships
Official

Federal

Washington County U.S Census

United States Census Bureau figures for Washington County, Oregon, with population, housing, income and business counts from the latest estimates.

census.gov
Open official site Washington County U.S Census
Official

Property records

Tax Assessments and Property Values

Tax Assessments and Property Values, the office that values property for tax in Washington County, Oregon, with parcel data, assessment records and appeal information.

washingtoncountyor.gov
Open official site Tax Assessments and Property Values
Official

Vital records

Washington County Marriages

Washington County Marriages, the office that issues these certificates, with the application, identification and fee rules it publishes.

washingtoncountyor.gov
Open official site Washington County Marriages

Everything else, organized

More official Washington County record sources

23 more Washington County sources not listed above.

More county sources

Local record guide

About public records in Washington County

County profile

Washington County at a glance

State
Oregon
County seat
Hillsboro
Population
600,372
Area
726 sq mi
Founded
1849
Cities and towns
13

Washington County offices and records

Sheriff & Law Enforcement. Washington County Sheriff's Office is responsible for maintaining law and order in Washington County's unincorporated areas.

Police Departments. Washington County is served by several law enforcement agencies, including Washington County Sheriff's Office and municipal police departments.

Law Enforcement & Arrests. Washington County Sheriff's Office is the primary law enforcement agency for unincorporated areas and provides countywide services including Washington County jail, civil process, and court security. Washington County operates Washington County Jail located at 215 SW Adams Avenue, which houses both pretrial detainees and sentenced inmates. Arrest records in Washington County are public records subject to Oregon's Public Records Law, codified in ORS 192.311 to 192.478.

Arrest Records. They are maintained by the arresting agency, primarily the County Sheriff's Office and municipal police departments.

• Phone: (970) 345-2244

Abandoned mine records

Old mine workings in Washington County

Where the workings are, and the office that holds the mine maps.

From the old mine records

What is on record in Washington County

Old mine sites
95
Sites with no status in the records
2
Still producing
24
Main minerals
Stone; construction sand and gravel; Stone; Stone, Crushed/Broken
Holes drawn on the old survey maps
67
Shafts and tunnels
0
What they are
borrow pit, quarry, gravel pit, sand pit
Maps surveyed
1954 to 1992
Records behind them
252 records for 188 sites, the rest are the same working written down more than once

Is an old working under a property here?

The mine records hold 121 named mine sites inside the county, 95 of them worked out or abandoned; the old survey maps add 67 holes drawn inside the county, 0 of them shafts or tunnels. The minerals the records name are Stone; construction sand and gravel; Stone; Stone, Crushed/Broken.

A point in either file is a location, not a property line: the sheet shows the opening on the surface, not the rooms under it. The record that shows what runs under a parcel is the mine map. The OSMRE National Mine Map Repository holds scanned underground mine maps and answers requests for a named mine or an area. Oregon has no state abandoned mine land program page; abandoned mine hazards on federal land are a BLM and Forest Service matter.

1 mile
Washington County: the boundary from the Census Bureau, and one dot for each old mine or hole on record inside it. The purple dots come off the old survey maps and the darkest of those are shafts and tunnels; the red, green and orange ones are mine records. Hover a dot for its name.
Oregon mine map and abandoned mine records
Named workings recorded in Washington County (122 shown, 66 unnamed on the map)

Rows taken off the old survey maps open the USGS record of what sits at that spot, because no single feature on those maps has a page of its own. Rows from the mine records open their own USGS page.

Disclaimer: The mine information here is for general information only. Old mine records can be incomplete, outdated or wrong, and finding nothing here does not mean there is nothing there. Check with the mine map office named here before you rely on it, and have a qualified engineer look at any ground you are worried about. PublicRecordCenter.com assumes no responsibility or liability for any errors, omissions, or consequences arising from the use of this information.

Straight answers

Washington County public-records FAQs

Open only the answer you need.

Where can I find mugshots or booking photos in Washington County, Oregon?

Booking photos are kept by the agency that made the arrest, such as the Washington County Sheriff or a city police department in Washington County. Ask that agency for its record. Under ORS 133.870, as amended by Senate Bill 993 (2025), a law enforcement agency may not release a booking photo except to the person shown, other law enforcement, the victim, a party in the criminal case, the court, a licensed investigator or a state mental hospital, to the public when there is a law enforcement purpose such as catching a fugitive, or after a conviction that results from that arrest.

How can I get a criminal background check in Washington County, Oregon?

The Oregon criminal history record comes from the Oregon State Police, Criminal Justice Information Services. Request a name based Open Record on another person through the OSP Open Records Portal (ORS 181A.245), or mail the form, a fingerprint card and the fee for a copy of your own record; OSP takes public fingerprints only at its Salem headquarters. Fee: $33 for an Open Record name search on another person; $33.00 for a fingerprint based copy of your own record.

How do I look up sex offenders in Washington County, Oregon?

Search the Oregon Sex Offender Registry (Oregon State Police; public site lists Level 3 offenders), or every state at once on the National Sex Offender Public Website run by the U.S. Department of Justice.

How do I register to vote in Washington County, Oregon?

Register with the county elections office or through the Oregon Secretary of State, Elections Division. You can also register online with the state online registration. The deadline to register is 21 days before Election Day; many voters are registered automatically at the DMV.

How do I look up property records in Washington County, Oregon?

Deeds and other recorded land documents in Washington County are kept by the Washington County clerk. Property values are set by the county assessor, and tax bills come from the county tax collector. Source: official state page.

How do I get a birth or death certificate in Washington County, Oregon?

Certified birth and death certificates for Oregon come from the Oregon Health Authority, Center for Health Statistics (Oregon Vital Records). Most county vital records offices in Oregon issue birth and death records for six months after the date of the event; they are in the county health department or the county clerk's office. Online or by phone through the state's contracted vendor VitalChek, by mail to Oregon Vital Records, PO Box 14050, Portland OR 97293, at the drop box at 800 NE Oregon Street, Portland, or in person by appointment at that address. Fee: $25 for a computer issued birth certificate and $30 for a full image birth certificate; $25.00 for each additional certificate.

How do I find business license records in Washington County, Oregon?

Business entity filings are searched with the Oregon Secretary of State, Corporation Division. Oregon has no general state business license; cities and counties may require a license for businesses operating in their jurisdictions.

Same county

Cities, towns and neighboring counties

Use the city page when a record was created by a municipal police department or city office; use the county page for courts, deeds, vital records and jail custody.