Multnomah County, Oregon Genealogy

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United States
Multnomah County

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


Multnomah County, Oregon
Map of Oregon highlighting Multnomah County
Location in the state of Oregon
Map of the U.S. highlighting Oregon
Location of Oregon in the U.S.
Founded December 22, 1854
County Seat Portland
Address Multnomah County Courthouse
1021 SW 4th Avenue
Portland, OR 97204-1123
Phone: 503.248.3511
Multnomah County Website

County Information


The County was named for the Chinookan word for the "lower river". The County is located in the northwest area of the state. [1]

Multnomah County, Oregon Record Dates

Beginning Dates for Major County Records
Birth Marriage Death Census Land Probate
1864 1855 1860 1849 1850

County Courthouse

County Clerk has divorce, court and land records from 1854 [2]

Multnomah County Information

Boundary Changes

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. [3]

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

Record Loss

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

Places / Localities

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]

Unincorporated communities
Historic communities

Trivia Tidbits

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




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


  • 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 Records

  • Records of Central Lutheran Church, Portland, in Evangelical Lutheran Church in America database at ($).

Court Records



Land and Property


Skamania CountyClark CountyHood River CountyClackamas CountyWashington CountyColumbia CountyOR MULTNOMAH.PNG
About this image
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for more resources


Early migration routes to and from Multnomah County, Oregon Genealogy for European and African American settlers included:

Military History and Records

Civil War

World War I

World War II


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

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


Vital Records

Birth Records

Delayed Birth Certificates

Birth Registers

Marriage Records

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

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.

Societies, Libraries and Museums

Oregon Historical Society Museum
1200 SW Park Ave
Portland, OR 97205
Telephone: 503-222-1741

Fairview Rockwood Wilkes Historical Society
17111 NE Sandy Blvd
Portland, OR 97230
Telephone: 503-261-8078

Multnomah Historical Association
PO Box 19785
2929 SW Multnomah Blvd
Portland, OR 97219

David Douglas Historical Society
1500 SE 130th Ave.
Portland, OR 97233
Telephone: 503-254-0797

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.


Multnomah County Oregon Genealogy References

  1. Wikipedia contributors, "Multnomah, Oregon" in,_Oregon_Genealogy accessed 28 Nov 2018
  2. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Multnomah County, Oregon page 573, At various libraries (WorldCat); FHL Book 973 D27e 2002.
  3. Handybook for Genealogists: United States of America, 10th ed.; Draper, Utah: Everton Pub., 2002 WorldCat 50140092, FHL Book 973 D27e 2002
  4. Wikipedia contributors, "Multnomah County, Oregon" in Wikipedia: the Free Encyclopedia,,_Oregon, accessed 16 December 2018.
  5. Jim Tompkins, "The Oregon Trail 1841-1848 Map VI" in Oregon Trail Landmarks at (accessed 18 July 2011).