Mason County, Washington GenealogyEdit This Page

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United States > Washington > Mason County


County Courthouse

Mason County; 411 N 5th PO Box 340; Shelton, WA 98584; Ph. 360.472.9670 Details: (Formerly Sawamish Co. Name changed to Mason 8 Jan 1864) (Co Aud has m rec from 1892, d rec 1891-1906 & land rec from 1850’s; Co Clk has div, pro & ct rec)

Quick History

3 January 1864: Renamed from  Sawamish County.

Parent County

13 March 1854: Mason County was created from Thurston County.  County seat: Shelton [1]

Boundary Changes

Record Loss

Places / Localities

Populated Places

Neighboring Counties

Grays Harbor | Jefferson | Kitsap | Pierce | Thurston




  • 1857
  • 1860
  • 1870
  • 1880
  • 1889
  • 1890 Veterans
  • 1900
  • 1910
  • 1920
  • 1930


LDS Ward and Branch Records

  • Shelton



Local Histories



Some military records for this county have been digitized at the Washington State Digital Archives.


  • Allyn Times - full-text digital issues in Google News Archive; covers 1889-1891



Vital Records

  • 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.

Societies and Libraries

Family History Centers

Web Sites


  1. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).


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