Greer County, Oklahoma

Greer County
Greer County
County
	Greer County Courthouse in Mangum
	Location within the U.S. state of Oklahoma
	Oklahoma's location within the U.S.
	Coordinates: 34°56′N 99°34′W / 34.93°N 99.56°W
Country	United States
State	Oklahoma
Founded	1896
Named for	John Alexander Greer
Seat	Mangum
Largest city	Mangum
Area
• Total	644 sq mi (1,670 km2)
• Land	639 sq mi (1,660 km2)
• Water	4.3 sq mi (11 km2) 0.7%
Population (2020)
• Total	5,491
• Density	8.5/sq mi (3.3/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	3rd
Website	greer.okcounties.org

Greer County is a county located along the southwest border of the U.S. state of Oklahoma. As of the 2020 census, the population was 5,491.^[1] Its county seat is Mangum.^[2] From 1860 to 1896, the state of Texas claimed an area known as Greer County, Texas, which included present-day Greer County along with neighboring areas. In 1896 it was designated as a county in Oklahoma Territory under a ruling by the US Supreme Court.^[3] The rural Greer County is home to Quartz Mountain State Park, near the community of Lone Wolf, Oklahoma. It is also home to the Oklahoma State Reformatory, located in Granite.^[4] Its population has declined since 1930 due to changes in agriculture and migration to cities for work.

^ "Greer County, Oklahoma". United States Census Bureau. Retrieved May 12, 2023.
^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
^ "Oklahoma: Individual County Chronologies". Oklahoma Atlas of Historical County Boundaries. The Newberry Library. Archived from the original on April 2, 2018. Retrieved February 24, 2015.
^ Cite error: The named reference EOHC-GreerCo was invoked but never defined (see the help page).