Union County, Oregon Genealogy

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United States Gotoarrow-kelly.png Oregon Gotoarrow-kelly.png Union County

Guide to Union County Oregon genealogy. Birth records, marriage records, death records, census records, family history, and military records.


Union County, Oregon
Map of Oregon highlighting Union County
Location in the state of Oregon
Map of the U.S. highlighting Oregon
Location of Oregon in the U.S.
Founded October 14, 1864
County Seat LaGrande
Address Union County Courthouse
1106 K Avenue
LaGrande, Or 97850
Phone: 541-963-1006
Union County Website

County Courthouse

County Clerk has marriage and land records from 1875,
and naturalization records 1900-1975.
Clerk CircuitCourt has divorce, probate and court records from 1854. [1]

Union County Government

County Records Inventory listing the records held at the Union County Court House as of October 2005.

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

Union was the former county seat until after 1 February 1901.

Historical Facts

Wikipedia has more about this subject: Union County, Oregon

14 October 1864: Union county was created from Baker County. [2]

Named for the city of Union which is located within the boundaries, a county seat at the time of the creation of the county.

  • Records Held at the Courthouse

County Records Inventory listing the records held at the Union County Court House as of October 2005.

  • Record Loss:

Boundary Changes

11 February 1887: Wallowa County was set off.

1 February 1901: Southeast portion of Union known as the Panhandle was annexed to Baker County by the order of the State Legislature.

Places / Localities

Trivia Tidbits

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




LDS Cemetery Records

Vol. 21 page 177 - Lower Cove Cemetery, Alical


  • 1870
  • 1880
  • 1890
  • 1900
  • 1910
  • 1920
  • 1930

Church History and Records

Court Records


Land and Property



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

  • Oregon Trail 1830s to 1890s from western Missouri to Oregon City, Oregon[3]



Probate Records

Rivers and Waterways

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


Vital Records

Many early marriages are listed on the Western States Marriage Index.

Societies, Libraries and Museums

Family History Centers



  1. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Union County, Oregon page 574, At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. WorldCat 50140092; FHL Collection Handybook for Genealogists: United States of America, 10th ed.] (Draper, Utah: Everton Pub., 2002)
  3. Jim Tompkins, "The Oregon Trail 1841-1848 Map VI" in Oregon Trail Landmarks at http://www.oregonpioneers.com/OTMap6.jpg (accessed 18 July 2011).