text: Of the state 's ten largest cities , three are outside the metropolitan areas of Oklahoma City and Tulsa , and only Lawton has a metropolitan statistical area of its own as designated by the United States Census Bureau , though the metropolitan statistical area of Fort Smith , Arkansas extends into the state .
simplified: Seven of the state 's ten largest cities are in the metropolitan areas of Oklahoma City and Tulsa . Only Lawton has a metropolitan area of its own .