Washington County, Oregon Genealogy
Guide to Washington County, Oregon ancestry, genealogy and family history, birth records, marriage records, death records, census records, family history, and military records.
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County Information
Description
Washington County was named for George Washington. The county is located in the northwestern area of the state. [1]
County Courthouse
Washington County Courthouse
145 NE 2nd Ave.
Hillsboro, OR 97124-3072
Phone: 503-846-8888
Washington County Website
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Washington County, Oregon Record Dates
Information for this chart was taken from various sources, often containing conflicting dates. This information should be taken as a guide and should be verified by contacting the county and/or the state government agency.
| Birth* | Marriage | Death* | Court | Land | Probate | Census |
| 1907 | 1842 | 1903 | 1844 | 1847 | 1842 | 1845 |
Record Loss
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There is no known history of courthouse disasters in this county. |
Boundary Changes
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Populated Places
For a complete list of populated places, including small neighborhoods and suburbs, visit HomeTown Locator.
The following are the most historically and genealogically relevant populated places in this county:[4]
| Cities | ||
| Unincorporated communities | ||
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| Census-designated places | ||
| Historic communities | ||
Defunct Post Offices
- Albion: Albion post office was in service on the extreme north border of the county from March 17, 1902 to Dec. 31, 1908. It was about due south of Vernonia. George M. Holt was the only postmaster. George M. Holt came from Albion, Illinois and he named the office for his old home in the Midwest. FamilySearch Catalog
History Timeline
Bible Records
Biographies
Business, Commerce, and Occupations
Cemeteries
Census Records
| Historical populations | ||
|---|---|---|
| Census | Pop. | %± |
| 1850 | 2,652 | — |
| 1860 | 2,801 | 5.6% |
| 1870 | 4,261 | 52.1% |
| 1880 | 7,082 | 66.2% |
| 1890 | 11,972 | 69.0% |
| 1900 | 14,467 | 20.8% |
| 1910 | 21,522 | 48.8% |
| 1920 | 26,376 | 22.6% |
| 1930 | 30,275 | 14.8% |
| 1940 | 39,194 | 29.5% |
| 1950 | 61,269 | 56.3% |
| 1960 | 92,237 | 50.5% |
| 1970 | 157,920 | 71.2% |
| 1980 | 245,808 | 55.7% |
| 1990 | 311,554 | 26.7% |
| 2000 | 445,342 | 42.9% |
| 2010 | 529,710 | 18.9% |
| Source: "Wikipedia.org". | ||
- 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 Records
List of Churches and Church Parishes
- FamilySearch Places: Map of cities and towns in this county - How to Use FS Places
Court Records
- County Records Inventory listing the records held at the Washington County Court House as of October 2005.
Directories
- 1970-2024 United States, Residence Database, 1970-2024 at FamilySearch — How to Use this Collection; index, coverage may vary
Emigration and Immigration
Ethnic, Political, and Religious Groups
Funeral Homes
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Genealogies
Guardianship
Land and Property Records
Online Land Indexes and Records
- Full-Text Search - Land Records at FamilySearch - index & images; dates, records, and places vary; How to Search
Local Histories
Maps and Gazetteers
for more resources
- FamilySearch Places: Map of cities and towns in this county - How to Use FS Places
Migration
Details about the rivers and waterways where farms and settlements are often found along them. See "Rivers and Waterways"
Military Records
Civil War
Online Civil War Indexes and Records
- 1861-1865 Oregon, Civil War Service Records of Union Soldiers, 1861-1865 at FamilySearch — How to Use this Collection; index & images
World War I
- 1919-1920 Oregon, World War I, County Military Service Records, 1919-1920 at FamilySearch — How to Use this Collection; index & images
- 1921-1938 Oregon, World War I, Veteran State Aid Applications, 1921-1938 at FamilySearch — How to Use this Collection; index & images
Naturalization and Citizenship
Online Naturalization Indexes and Records
- 1868-1991 United States, Oregon, Naturalization Records, 1868-1991 at FamilySearch — How to Use this Collection; index & images
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 digitized 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)
- 1800s-Current Oregon, U.S., Newspapers.com™ Stories and Events Index, 1800's-Current at Ancestry — index & images ($)
Obituaries
Other Records
Periodicals
Probate Records
Online Probate Indexes and Records
- 1833-1963 Oregon Wills and Probate Records 1833-1963 at Ancestry — index & images ($)
- Full-Text Search - Wills and Probate Records at FamilySearch - index & images; dates, records, and places vary; How to Search
School Records
Social Security Records
- 1935-2014 United States Social Security Death Index at FamilySearch — How to use this collection; index. Also at Ancestry, findmypast, Fold3, GenealogyBank, MyHeritage, and Steve Morse. Click here for more information.
- 1936-2007 U.S., Social Security Applications and Claims Index, 1936-2007
- 1936-2007 United States, Social Security Numerical Identification Files (NUMIDENT), 1936-2007 at FamilySearch - How to Use this Collection; index
Tax Records
Vital Records
The FamilySearch Library has copies of some records such as: Washington County coroner's inquest records 1854-1889
Birth
- 1842-1917 Oregon, Oregon State Archives, Births, 1842-1917 at FamilySearch — How to Use this Collection; index & images; Also at: Ancestry ($)
- 1855-1970 Oregon, U.S., County Births and Deaths, 1855-1970 at Ancestry — index & images ($)
- 1860-1952 Oregon Births, 1860-1952 at FamilySearch — How to Use this Collection; index
- 1876-1940 Oregon, Center for Health Statistics, Birth Records, 1903-1918 at FamilySearch — How to Use this Collection; index & images
Marriage
- 1826-1975 Oregon, United States Marriages at Findmypast — index ($)
- 1841-1964 Oregon, Marriages and Divorces at MyHeritage — index ($)
- 1849-1884;1991-2006 Oregon Marriage Index, 1849-1884; 1991-2006 at FamilySearch — How to Use this Collection; index & images
- 1906-1968 Oregon, U.S., State Marriages, 1906-1968 at Ancestry - index & images ($)
- Western States Marriage Index at BYU-Idaho
- Marriage Index 1885-1896
Death
- 1855-1970 Oregon, U.S., County Births and Deaths, 1855-1970 at Ancestry — index & images ($)
- 1864-1967 Oregon, Oregon State Archives, Death Records, 1864-1967 at FamilySearch — How to Use this Collection; index and images
- 1864-1968 Oregon, U.S., State Deaths, 1864-1968 at Ancestry — index & images ($)
Divorce
- 1841-1964 Oregon, Marriages and Divorces at MyHeritage — index ($)
Research Facilities
Archives
Listed below are archives in Washington County. For state-wide archival repositories, see Oregon Archives and Libraries.
FamilySearch Centers
FamilySearch Center and Affiliate Library Locator map - search for local FamilySearch Centers or Affiliate Libraries
- FamilySearch Centers provide one-on-one assistance, free access to center-only databases, and to premium genealogical websites.
- FamilySearch Affiliate Libraries have access to most center-only databases, but may not always have full services normally provided by a FamilySearch center.
Local Centers and Affiliate Libraries
- Beaverton Oregon West FamilySearch Center
- Hillsboro Oregon FamilySearch Center
- The Genealogical Forum of Oregon - an affiliate library
- Hillsboro Public Library - an affiliate library
- Lake Oswego Public Library - an affiliate library
Libraries
Listed below are libraries in Washington County. For state-wide library facilities, see Oregon Archives and Libraries.
Washington County Library Services
155 N 1st Ave
Hillsboro OR 97124
Phone: 503-846-8685
Website
Facebook Page
Museums
Five Oaks Musumn
17677 NW Springville Rd
Portland, OR 97229
Phone:503-645-5353
Website
Facebook Page
Societies
Listed below are societies in Washington County. For state-wide genealogical societies, see Oregon Societies.
Washington County Heritage Online
Website
Listing of Partner Institutions
Beaverton Historical Society and History Center
12490 S W First Suite 300
Beaverton, OR 97005
503-430-0160
Website
Facebook Page
Websites
- Washington County GenWeb, and OR GenWeb
- USGenWeb Archives
- FamilySearch Catalog – The FamilySearch catalog contains descriptions and access information for all genealogical materials (including books, online materials, microfilm, microfiche, and publications) in their collection. Use Historical Records to search for specific individuals in genealogical records.
Research Guides
References
- ↑ Wikipedia contributors, "Washington, Oregon" in https://en.wikipedia.org/wiki/Washington_County,_Oregon accessed 29 Nov 2018
- ↑ Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Washington County, Oregon page 574, At various libraries (WorldCat); FS Library Book 973 D27e 2002.
- ↑ Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Washington County, Oregon . Page 572-574 At various libraries (WorldCat); FS Library Book 973 D27e 2002; Alice Eichholz, ed. Ancestry’s Red Book: American State, County, and Town Sources, Third ed. (Provo, Utah: Ancestry, 2004), 563-564.
- ↑ Wikipedia contributors, "Washington County, Oregon" in Wikipedia: the Free Encyclopedia, https://en.wikipedia.org/wiki/Washington_County,_Oregon, accessed 20 January 2019.