Whitman County, Washington

Whitman County
Whitman County
County
	Colfax Post Office
	Location within the U.S. state of Washington
	Washington's location within the U.S.
	Coordinates: 46°53′N 117°31′W / 46.89°N 117.52°W
Country	United States
State	Washington
Founded	November 29, 1871
Named for	Marcus Whitman
Seat	Colfax
Largest city	Pullman
Area
• Total	2,178 sq mi (5,640 km2)
• Land	2,159 sq mi (5,590 km2)
• Water	19 sq mi (50 km2) 0.9%
Population (2020)
• Total	47,973
• Estimate (2022)	47,619
• Density	22/sq mi (8/km2)
Time zone	UTC−8 (Pacific)
• Summer (DST)	UTC−7 (PDT)
Congressional district	5th
Website	www.whitmancounty.org

Whitman County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 47,973.^[1] The county seat is Colfax,^[2] and its largest city is Pullman.

The county was formed from Stevens County in 1871.^[3] It is named after Marcus Whitman, a Presbyterian missionary who, with his wife Narcissa, was killed in 1847 by members of the Cayuse tribe.^[4]

^ "State & County QuickFacts". United States Census Bureau. Retrieved August 19, 2023.
^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
^ "Milestones for Washington State History — Part 2: 1851 to 1900". HistoryLink.org. March 6, 2003.
^ Meany, Edmond S. (1923). Origin of Washington geographic names. Seattle: University of Washington Press. p. 348.