Gilliam County, Oregon

Gilliam County
Gilliam County
County
	Gilliam County Courthouse in Condon
	Location within the U.S. state of Oregon
	Oregon's location within the U.S.
	Coordinates: 45°23′N 120°13′W / 45.38°N 120.21°W
Country	United States
State	Oregon
Founded	February 25, 1885
Named for	Cornelius Gilliam
Seat	Condon
Largest city	Condon
Area
• Total	1,223 sq mi (3,170 km2)
• Land	1,205 sq mi (3,120 km2)
• Water	18 sq mi (50 km2) 1.5%
Population (2020)
• Total	1,995
• Estimate (2023)	2,026
• Density	1.6/sq mi (0.63/km2)
Congressional district	2nd
Website	www.co.gilliam.or.us

Gilliam County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 1,995,^[1] making it the third-least populous county in Oregon. The county seat is Condon.^[2] The county was established in 1885 and is named for Cornelius Gilliam,^[3] a colonel who commanded the forces of the provisional government of Oregon after the Whitman Massacre.

^ "State & County QuickFacts". United States Census Bureau. Retrieved May 20, 2023.
^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
^ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. pp. 137.