Washington County, Oregon Genealogy

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United States
Oregon
Washington County

Guide to Washington County, Oregon ancestry, family history, and genealogy birth records, marriage records, death records, census records, family history, and military records.


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Washington County, Oregon
Map
Map of Oregon highlighting Washington County
Location in the state of Oregon
Map of the U.S. highlighting Oregon
Location of Oregon in the U.S.
Facts
Founded September 3, 1849
County Seat Hillsboro
Courthouse
Address Washington County Courthouse
155 N 1st Avenue Ste 130
Hillsboro, OR 97124-3072
Phone: 503.864.8741
Washington County Website



County Information


Washington County, Oregon Record Dates

Beginning Dates for Major County Records
Birth Marriage Death Census Land Probate
1907 1842 1850 1847 1842

County Courthouse

Record Section, Assessment & Taxation has marriage,
land and military records from 1850.
Clerk Circuit Court has divorce and court records
from 1896, probate records from 1871 and
naturalization records from 1906. [1]


  • Records Held at the Courthouse

County Records Inventory listing the records held at the Washington County Court House as of October 2005.

Record Loss

There is no known history of courthouse disasters in this county.

Quick Facts

3 September 1849: Washington county was renamed from Twality County. Named for George Washington, the first president of the United States. [2]

Boundary Changes

16 January 1854: Columbia County set off.

22 December 1854: Multnomah County set off.

For animated maps illustrating Oregon County boundary changes, "Rotating Formation Oregon County Boundary Maps" (1843-1975) may be viewed for free at the MapofUS.org website.

Places / Localities

Populated Places

Cities

Please do not format these pages unless you have contents to add to them.

Banks | Beaverton | Cornelius | Durham | Forest Grove | Gaston | Hillsboro | King City | Lake Oswego | North Plains | Portland | Rivergrove | Sherwood | Tigard | Tualatin | Wilsonville

Communities

Please do not format these pages unless you have contents to add to them.

Neighboring Counties

Clackamas | Clatsop | Columbia | Multnomah | Tillamook | Yamhill

Trivia Tidbits

Information about localities, too small or too brief to describe in separate pages. Exception to this are Post Offices. > Trivia Tidbits

Resources

Archives and Libraries

Biography

Cemeteries

Tombstone Transcriptions Online Tombstone Transcriptions in Print List of Cemeteries in the county
Findagrave.com Family History Library Findagrave.com
ORGenWeb WorldCat Billion Graves
ORGenWeb Archives
Tombstone Project
ORInterment
ORGravestones
EPodunk
Billion Graves
See Oregon Cemeteries for more information.

Census

  • 1845 Territorial Transcription and Index (under name of Tuality, Twalatain and Twality County)
  • 1849 Territorial Transcription and Index (under name of Twality County)
  • 1850 Territorial Transcription and Index
  • 1853 Territorial Transcription and Index
  • 1856 Territorial Transcription and Index

Church History and Records

Court Records

Gazetteers

History

Land and Property

Maps

Orwashington.jpg

Military History and Records

Civil War

Newspapers

Oregon Online Historical Newspapers - identifies historical archived and digitized newspapers available online on both free and pay-to-access websites.


Historic Oregon Newspapers as a division of the Oregon Digital Newspaper Program has digitzied more than 644,000 pages of newspapers throughout Oregon. Dates range from 1846-1922 with selected issues continuing through 1973.

Of particular interest to Washington county researchers:


The Banner-Courier (Beaverton)
The Owl (Beaverton)
The Argus (Hilsboro)
The Hilsboro Argus (Hilsboro)
Hilsboro Independent (Hilsboro)
Washington County Independent (Hilsboro)

Probate Records

Online Records

Rivers and Waterways

Details about the rivers and waterways where farms and settlements are often found along them. > Rivers and Waterways

School Records

Taxation

Vital Records

The Family History Library has copies of some records such as:

Washington County coroner's inquest records 1854-1889

See also How to order Oregon Vital Records, order electronically online or download an application for Oregon Birth Certificate, Marriage Certificate, Divorce Certificate, Death Certificate Application to mail.

Birth

Societies, Libraries and Museums

Washington County Historical Society
120 E Main St
Hillsboro, OR 97124
Telephone: 503-645-5353
Website

Washington County Historical Society & Museum
17677 NW Springville Rd
Portland, OR 97229
Telephone: 503-645-5353
Website

Beaverton Historical Society and History Center
12490 S W First
Beaverton, OR 97005
Telephone: 503-430-0160
Website

Family History Centers

Family history centers provide one-on-one assistance and free access to premium genealogical websites. In addition, many centers have free how-to genealogy classes. See family history center for more information. Search the online FHC directory for a nearby family history center.

Websites

Washington County Oregon Genealogy References

  1. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Washington County, Oregon page 574, At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. WorldCat 50140092FamilySearch Catalog Handybook for Genealogists: United States of America, 10th ed.] (Draper, Utah: Everton Pub., 2002)