Answer
Central Arkansas is the 60th-largest Metropolitan Statistical Area (MSA) in the United States and the 75th-largest combined statistical area (CSA). The MSA is defined by the United States Census Bureau as the county of Pulaski, Arkansas, and the MSA includes the Arkansas River valley between Little Rock and North Little Rock. The CSA includes the Little Rock-North Little Rock-Conway, AR MSA and the Fort Smith, AR-OK MSA.