Sweetwater is a town in Beckham and Roger Mills Counties in the U.S. state of Oklahoma. It was incorporated in 1998. The population was 102 at the time of the 2020 census, an increase of 17.2% over the 87 reported in the 2010 census.

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.