King County, Washington Genealogy

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United States Gotoarrow.png Washington Gotoarrow.png King County

Guide to King County Washington genealogy. Birth records, marriage records, death records, census records, family history, and military records.

800px-Flag map of Washington.svg.png Washington
Online Records

Quick start:

King County, Washington
Map of Washington highlighting King County
Location in the state of Washington
Map of the U.S. highlighting Washington
Location of Washington in the U.S.
Founded December 22, 1852
County Seat Seattle
Address King County Courthouse
516 3rd Avenue
Seattle, WA 98104
Phone: 206.296.1020
King County Website

County Overview

Beginning dates for major county records
* For earlier dates, try... Church | Obituaries | Cemeteries
Boundary Changes
Record Loss


The types of records that follow are used for genealogy and family history. Most tell what you may learn and how to locate the records. Links to Internet sites usually go directly to King County, Washington Genealogy entries with names, images, or information.

Bible Records




Find A Grave: search and contribute to 168 King County cemeteries



  • 1860
  • 1870
  • 1880
  • 1890
  • 1890 Veterans
  • 1900
  • 1910
  • 1920
  • 1930


  • 1889
  • 1907

Church Records

The information church records provide depends upon the church practices and the record keepers. Records may include names, ages, and dates of events such as baptism, marriage, or burial. See Washington Church Records.

The Church of Jesus Christ of Latter-day Saints

LDS Ward and Branch Records

  • Queen Anne (Seattle)
  • Renton
  • Seattle S.
  • Seattle W.
  • University (Seattle)

Denny Park Lutheran Church

  • Records of Denny Park Lutheran Church, Seattle, in Evangelical Lutheran Church in America database at ($).

Immanuel Lutheran Church

  • Records of Immanuel Lutheran Church, Seattle, in Evangelical Lutheran Church in America database at ($).

Court Records

Many of your ancestors may be found in court records as defendants, plaintiffs, witnesses, or jurors. Court records can establish family relationships and places of residence, occupations, and other family history information. See Washington Court Records for the various courts through the years.

For specialized court records, see Divorce  · Guardianship  · Land  · Naturalization  · Probate


Emigration and Immigration

Ethnic, Political or Religious Groups


World War II Files, 1942-1946

Public Welfare/Social Security Department, (Japanese Internment) Assistance Cases, Evacuee Referrals for Resettlement and Assistance, 1945-1946 from the Washington State Archives – Digital Archives



A FamilySearch Community Tree is available for this place.


Guardianship of orphans or adults unable to manage their own affairs were handled by the probate and the Federal District courts. See Washington Court Records.


Local histories for King County, Washington Genealogy may include biographies, history of churches, schools, local government with names of officials, military information, and more. See Washington Local Histories.

  • History and Progress of King County, Washington... 1916, by Henry C. Pigott. Digitalized book online from

Oral History

  • Olson, Diane and Cory, comp. and ed., Black Diamond: Mining the Memories, An oral history of life in a company town, (Seaside, Oregon: Frontier Publishing, 1988). FHL Book 979.777/B1 H2o The 1989 Washington Centennial project of the Black Diamond Historical Society, this book is a compilation of historical photographs and selections from the transcripts of over fifty oral history interviews.
  • University of Washington, Urban Design and Planning, Mining the Memories II, Black Diamond Oral History Project, (University of Washington: 2011). Summary of 2010 oral history project pdf for the Black Diamond Historical Society. A follow-up to the 1988 centennial project, students interviewed another twenty-two residents capturing the history of Black Diamond as the area transitioned from a coal mining company town, 1950s to present.
History Timeline

Historical County Boundaries from Newberry Library[2]

Emphasis for this timeline is on events that affected migration, records, or record-keeping. Unless otherwise mentioned, the events below were gleaned from Wilma, David. Okanogan County -- Thumbnail History, History Essay 7608.

Land and Property

Land Records reveal
Yes or Maybe  Y  M
Seller (Grantor) Green check.png]]  
Seller's Spouse Green check.png]]  
Buyer (Grantee) Green check.png]]  
Heirs   Green check.png]]
Witnesses Green check.png]]  
Land Description and Dates Green check.png]]  
Tips -or- Land Contents

Land records (especially deeds) may give the name of a spouse, heirs, and witnesses, who may be relatives or in-laws.

County deeds, mortgages, and leases show transfers from person to person. See also Court Records for actions involving real estate. See Washington Land for government-to-person records.




Naturalization and Citizenship

Declarations of Intent before 1906 often include the nation of origin, his* foreign and "Americanized" names, residence, and date of arrival. See Washington Naturalization and Citizenship for more information.    (*Women were not naturalized until 1922 in the United States.)

Washington State Digital Archives has digitized various types of naturalization-related records, including declarations of intentions, delayed birth files, naturalization affidavits, notifications of application for admission to US citizenship, orders fixing naturalization terms, petitions and records, petitions, receipts for certificates of citizenship, record of final decrees of citizenship and record of petitions dockets. Depending on the county, records range from 1854-1988.


Finding More Washington Newspapers

Additional newspapers abstracts can sometimes be found using search phrases such as King County, Washington Genealogy newspapers in online catalogs like:

  • WorldCat (For instructions see WorldCat Online Catalog).
  • Do a search for these and other records in the FamilySearch Catalog. To select a county in Washington, add a comma, slide way down to the county list, then click Search. (Almost every state seems to have a Washington County)



Probate Records

Probate records identify heirs of the decedents, give the (approximate) death dates, and provide specifics about property holdings. The records were kept by the county judge.

These include wills, inheritance records, dockets, and other documents regarding property and estates of individuals who have died. See also Court Records for civil actions involving estates. Also see Washington Probate Records.

A wiki article describing an online collection is found at:
Washington, King County Probate Records (FamilySearch Historical Records)

Public Records



King County Courthouse
516 3rd Avenue
Seattle, WA 98104
Phone: 206.296.1020

Records and Elections Division, Records Section has birth, marriage, death and land records from 1853. Clerk of the Superior Court has divorce, probate and county records. [3]

Family History Centers
  • Fiske Genealogical Foundation and Library - Located at 1644 43rd Ave. E., Seattle, WA 98112. Hours: Monday & Saturday 10:00 a.m. - 3 p.m.; Wednesday 12:00 - 8:00 p.m.; Thursday 3:00 - 8:00 p.m.; Friday by appt; 2nd Sunday from 1:00 - 4:00 p.m. Phone: 206-328-2716.
  • Black Diamond Historical Depot Museum
    32627 Railroad Ave
    Black Diamond WA 98010
    Franklin Tours: 253–852–6763
    Transit: Baker St and 3rd Ave
    Send e-mail to:

    Thursday 9 a.m. to 4 p.m.
    Saturday and Sunday (Summer) 12 to 4 p.m.
    Saturday and Sunday (Winter) 12 to 3 p.m.
  • Black Diamond Historical Society – The mission of the Black Diamond Historical Society shall be the discovery, preservation, and dissemination of the history of Black Diamond and environs, as it relates to King County and the State of Washington. Like us on facebook Black Diamond History
  • Eastside Genealogical Society – Library holdings are located at the Bellevue Regional Library, a part of the King County Library System. Meetings are held at 7:00 p.m. on the 2nd Thursday of the month at the Bellevue Regional Library at 1111 110th Ave. N.E., Bellevue, WA 98004. Check the website for more information on the various interest groups that meet as a part of EGS.
  • Seattle Genealogical Society – Library located at 6200 Sand Point Way N.E., #101, Seattle, WA 98115. Hours: Tuesday - Saturday 10:00a.m. - 3:00 p.m. and Wednesday until 8:00 p.m. Check the website for the society meeting schedule and a listing of the various interest groups that meet as a part of SGS.


Washington tax records complement land records and can supplement the years between censuses. There may be gaps of several years in the tax records of some counties. For more information, see the wiki page Washington Taxation.

Vital Records

The county auditors in Washington kept records of birth, marriage, and death. The county clerk has the divorce records - the earliest dates to the present.

See also How to order Washington Vital Records, order electronically online or download an application for Washington Birth or Death Certificate and Marriage or Divorce Certificate Applications to mail. See Washington Vital Records for details and history of the records. .


Washington State Digital Archives has a database of King County Birth Records. This database contains the names of people who were born in King County from 1891-1907.


To obtain copies of marriage records from King County, go to the following website: The website offers a link to an online search for marriage records 1855-1989, which includes images.


Divorce records give the names of the parties and may give the date and place of their marriage. See Washington Vital Records for excellent information.

  • Washington Death Certificates 1907-1960 A free internet index to the 1907-1960 death certificates can be found at FamilySearch Record Search, no images are available. A transcribed death certificate may contain such information as name of the deceased, date and place of death, age, gender, birth date and birth place, mother’s maiden name and name of spouse, place of residence, occupation and certificate numbers.


Archives, Libraries, etc.

Resources for King County, Washington Genealogy are available in libraries, archives, and other repositories at all levels: the town, the county, the state (including universities), and the nation.


Incorporated Cities

Algona - 2,775
Auburn - 68,270 (Orig. Slaughter)
Beaux Arts Village - 320
Bellevue - 122,900
Black Diamond - 4,190
Bothell - 33,430
Burien - 31,730
Carnation - 1,915
Clyde Hill - 2,845
Covington - 17,640
Des Moines - 29,290
Duvall - 5,990
Enumclaw - 11,490
Federal Way - 88,760
Hunts Point - 470
Issaquah - 27,160 (Orig. Gilman)
Kenmore - 20,650
Kent - 88,760
Kirkland - 84,830
Lake Forest Park - 12,840
Maple Valley - 21,130
Medina 2,980
Mercer Island - 22,280
New Castle - 9,955
Normandy Park - 6,540
North Bend - 5,665
Pacific - 6,305
Redmond - 53,680
Renton - 86,230
Sammamish - 41,070
SeaTac - 25,890
Seattle - 612,000 (Largest City and County Seat)
Shoreline - 54,580
Skykomish - 225
Snoqualmie 9,850
Tukwila - 18,190 (Orig. Foster)
Woodinville - 11,350
Yarrow Point - 995

King County Washington Genealogy References

  1. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).
  2. John H. Long, Atlas of Historical County Boundaries (Chicago: Newberry Library, 2006) online.
  3. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Ferry County, Washington page 732, At various libraries (WorldCat); FHL Book 973 D27e 2002.