Multnomah County, Oregon GenealogyEdit This Page

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United States > Oregon > Multnomah County
showing location of Multnomah COunty


County Courthouse

Multnomah County Courthouse
1021 S.W. Fourth Avenue
Portland, OR 97204

Quick Facts

Parent Counties

22 December 1854: Multnomah county was created from Clackamas and Washington Counties. Named after Native American people first recorded in the journals of the Lewis and Clark Expedition, the Mulknomans, who inhabited the area of Portland, most specifically on Sauvie Island.

The county seat is Portland.

Boundary Changes

Places / Localities

Populated Places

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Fairview | Gresham | Lake Oswego | Maywood Park | Milwaukie | Portland | Troutdale | Wood Village

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Bonneville | Bridal Veil | Corbett | Dunthorpe | Latourell | Riverwood

Neighboring Counties

Clackamas | Columbia | Hood River | Washington | Washington counties: Clark | Skamania



Cemeteries (Rural)


  • 1860
  • 1870
  • 1880
  • 1890
  • 1895---State census, lists only names (no age or birthplace). An index is available in the Oregon Historical Records Index, at the Oregon State Archives.
  • 1900
  • 1910
  • 1920
  • 1930

Church History and Records

Court Records



Land and Deed Records


Military History and Records


Probate Records


Vital Records

The Genealogical Forum of Oregon has placed an index on-line to the following marriage books: (FI$)

The Index provides the following information:

  1. Surname and given Name
  2. Spouse’s Surname and given name
  3. Year
  4. Volume
  5. Page

Societies and Libraries

Web Sites



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