Beckham County is a county located on the western border of the U.S. state of Oklahoma. As of the 2020 census, the population was 22,410. Its county seat is Sayre. Founded upon statehood in 1907, Beckham County was named for J. C. W. Beckham, who was Governor of Kentucky and the first popularly elected member of the United States Senate from Kentucky. Beckham County comprises the Elk City, OK Micropolitan Statistical Area.

Sayre is a city in, and the county seat of, Beckham County, in western Oklahoma, United States. It is halfway between Oklahoma City and Amarillo, Texas on Interstate 40 and the former U.S. Route 66. The population was 4,809 at the time of the 2020 census, an increase over the 4,375 figure from the 2010 census, and the largest population ever recorded by a census since Sayre's founding.