Sallisaw is a city and county seat in Sequoyah County, Oklahoma, United States. As of the 2010 Census, it had a population of 8,880, an 11.2 percent increase over the figure of 7,891 recorded in 2000. Sallisaw is part of the Fort Smith, Arkansas–Oklahoma Metropolitan Statistical Area.

The Fort Smith Metropolitan Statistical Area, as defined by the United States Census Bureau, is a five-county area including three Arkansas counties and two Oklahoma counties, and anchored by the city of Fort Smith, Arkansas. The total MSA population in 2000 was 273,170 people, estimated by the Bureau to have grown to 289,693 people by 2007.