Gilliam County, Oregon Genealogy

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

Gilliam County, Oregon
Map of Oregon highlighting Gilliam County
Location in the state of Oregon, United States Genealogy
Map of the U.S. highlighting Oregon
Location of Oregon in the U.S.
Founded February 17, 1899
County Seat Condon
Address Gilliam County Courthouse
221 South Oregon Street
Condon, Or 97823
Phone: 541-384-2311
Gilliam County Website

County Information[edit | edit source]

Description[edit | edit source]

The County was named for Cornelius Gilliam, who commanded the forces of the provisional government of Oregon after the Whitman Massacre. The County is located in the north central area of the state. [1]

County Courthouse

[edit | edit source]

County Clerk has marriage, divorce,
probate, court and land records from 1885.[2]

Gilliam County, Oregon Record Dates[edit | edit source]

Known Beginning Dates for Major County Records[3]
Birth* Marriage Death* Court Land Probate Census
1903 1885 1912 1885 1885 1885 1845
*Statewide registration for births and deaths in 1903. General compliance year unknown.

Record Loss[edit | edit source]

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

Boundary Changes[edit | edit source]

17 Feb 1899: Parts were taken to form Wheeler County.

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

Populated Places[edit | edit source]

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
Ghost towns

Defunct Post Offices[edit | edit source]

  • Ajax: Ajax is a locality about 16 miles airline northwest of Condon, between Ferry and Devils canyons. It supported a post office at one time, but now there is not much in the place. The office operated intermittently from 1888 to 1921. There is a story to the effect that a cowboy named Gardner volunteered to carry the mail for the new office, without pay, and that he suggested it be named after the steamer Ajax. Gardner had come to Oregon from California on that ship and had a sentimental interest in the name. FamilySearch Catalog

Neighboring Counties[edit | edit source]

Morrow | Sherman | Wasco | Wheeler | Klickitat County, Washington State

Trivia Tidbits[edit | edit source]

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

Resources[edit | edit source]

Cemeteries[edit | edit source]

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

Census[edit | edit source]

Historical populations
Census Pop.
1890 3,600
1900 3,201 −11.1%
1910 3,701 15.6%
1920 3,960 7.0%
1930 3,467 −12.4%
1940 2,844 −18.0%
1950 2,817 −0.9%
1960 3,069 8.9%
1970 2,342 −23.7%
1980 2,057 −12.2%
1990 1,717 −16.5%
2000 1,915 11.5%
2010 1,871 −2.3%
Source: "".
Federal[edit | edit source]
  • 1890
  • 1900
  • 1910
  • 1920
  • 1930

Church History and Records[edit | edit source]

List of Churches and Church Parishes

Court Records[edit | edit source]

Gazetteers[edit | edit source]

History[edit | edit source]

Land and Property[edit | edit source]

Maps[edit | edit source]


Migration[edit | edit source]

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

Military History and Records[edit | edit source]

Civil War[edit | edit source]
World War I[edit | edit source]

Newspapers[edit | edit source]

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

Probate Records[edit | edit source]

Online Records

Rivers and Waterways[edit | edit source]

Details about the rivers and waterways where farms and settlements are often found along them. >> Rivers and Waterways

Taxation[edit | edit source]

Vital Records[edit | edit source]

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[edit | edit source]

Delayed Birth Certificates

Birth Registers

Marriage Records[edit | edit source]

Death Records[edit | edit source]

Societies, Libraries and Museums[edit | edit source]

Gilliam County Historical Museum
History Museum
Condon, OR 97823
Telephone: 541-384-4233

Gilliam County Historical Society
Highway 19 at Burns Park
PO Box 377
Condon, Oregon, 97823
Telephone: 503-384-4233

Gilliam County Public Library
134 S Main St
Condon, OR 97823

Family History Centers[edit | edit source]

Family History Center and Affiliate Library Locator map - search for local Family History Centers or Affiliate Libraries

  • Family History Centers provide one-on-one assistance, free access to center-only databases, and to premium genealogical websites.
  • FamilySearch Affiliate Libraries have access to most center-only databases, but may not always have full services normally provided by a family history center.

Local Centers and Affiliate Libraries

Websites[edit | edit source]

Gilliam County Oregon Genealogy References[edit | edit source]

  1. Wikipedia contributors, "Gilliam, Oregon" in,_Oregon accessed 27 Nov 2018
  2. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Gilliam County, Oregon page 572, At various libraries (WorldCat); FHL Book 973 D27e 2002.
  3. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Gilliam County, Oregon . Page 572-574 At various libraries (WorldCat); FHL Book 973 D27e 2002; Alice Eichholz, ed. Ancestry’s Red Book: American State, County, and Town Sources, Third ed. (Provo, Utah: Ancestry, 2004), 563-564.
  4. Wikipedia contributors, "GIlliam County, Oregon," in Wikipedia: the Free Encyclopedia,,_Oregon, accessed 10 October 2018.
  5. Jim Tompkins, "The Oregon Trail 1841-1848 Map VI" in Oregon Trail Landmarks at OTMap6.jpg (accessed 18 July 2011).