Jefferson County, Oregon Genealogy

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United States
Jefferson County

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


Jefferson County, Oregon
Map of Oregon highlighting Jefferson County
Location in the state of Oregon
Map of the U.S. highlighting Oregon
Location of Oregon in the U.S.
Founded December 12, 1914
County Seat Madras
Address Jefferson County Courthouse
75 SE C Street
Madras, Or 97741-1709
Phone: 541-475-4451
Jefferson County Website

County Information


The County was named for Mount Jefferson. The County is located in the north central area of the state. [1]

Jefferson County, Oregon Record Dates

Beginning Dates for Major County Records
Birth Marriage Death Census Land Probate
1886 1882 1920 1864 1883

County Courthouse

County Clerk has marriage, divorce, probate and land records from 1914. [2]

Jefferson County Government

County Records Inventory listing the records held at the Jefferson County Court House as of July 2011.

Jefferson County Court is structured differently. Check the County Records Inventory link for addresses for location of records (left column).

Confederated Tribes of Warm Springs maintain separate government.

  • Culver was the county seat 1914 to 1916
  • Record Loss:

Historical Facts

Named for Mount Jefferson, located on west boundary. It was named in turn for Thomas Jefferson, third president of the United States of America by Lewis and Clark Expedition.

Trivia Tidbits: Little biographic bits associated with the names of non-population localities.

Parent County

12 Decembr 1914: Created from Crook County. [3]

Boundary Changes

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

Populated Places

The following are locations in the county:[4]

For a complete list of populated places, including small neighborhoods and suburbs, visit HomeTown Locator

Unincorporated communities
  • Geneva
  • Grandview
  • Grizzly
  • Opal City
  • Willowdale
Native American communities
Census-designated places
Ghost towns

Trivia Tidbits

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

Indian Reservation

Warm Springs (Confederated Tribes of Warm Springs)

Neighboring Counties

Crook | Deschutes | Linn | Marion | Wasco | Wheeler



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


  • 1920
  • 1930

Church History and Records

Court Records



Land and Property


Marion CountyWasco CountyWheeler CountyCrook CountyDeschutes CountyLinn CountyOR JEFFERSON.PNG
About this image
Click a neighboring county
for more resources

Military History and Records

Civil War

World War I


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

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.

Birth Records

Delayed Birth Certificates

Birth Registers

Marriage Records

  1. 1826-1975 - Oregon, United States Marriages at FindMyPast — index $
  2. Extractions of early marriages are listed on the Western States Marriage Index
  3. Marriage Index 1885-1896 Actually is a book of affiants reporting the marriages. Historical Records Collection

Death Records

Societies, Libraries and Museums

Jefferson County Historical Society
PO Box 647
Madras, OR 97741
Telephone: 541-475-5390

Jefferson County Museum and Historical Society
34 SE "D" Street
Madras, OR 97741

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.


Jefferson County Oregon Genealogy References

  1. Wikipedia contributors, "Jefferson, Oregon" in,_Oregon accessed 27 Nov 2018
  2. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Jefferson County, Oregon page 573, At various libraries (WorldCat); FHL Book 973 D27e 2002.
  3. WorldCat 50140092; FHL Collection Handybook for Genealogists: United States of America, 10th ed.] (Draper, Utah: Everton Pub., 2002)
  4. Wikipedia contributors, "Jefferson County, Oregon," in Wikipedia: the Free Encyclopedia,,_Oregon, accessed 10 November 2018.