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.
Other major cities located within the area include the Arkansas cities of Van Buren and Ozark and the Oklahoma cities of Poteau and Sallisaw. It is directly positioned under Crawford County in the western part of Arkansas.(Wikipedia)