Arkoma is a town in LeFlore County, Oklahoma, United States. It is part of the Fort Smith, Arkansas-Oklahoma Metropolitan Statistical Area. The population was 1,989 at the 2010 census, a decline from 2,180 in 2000. The name of the town is a portmanteau of Arkansas and Oklahoma. Throughout its history, Arkoma has served as a "bedroom community" because many residents commuted to work in Fort Smith.