"Sebastian County"@en . . "2.6"^^ . "125744"^^ . . . "1.41413e+09"^^ . "91.1201"^^ . "3.62598e+07"^^ . "2010Z"^^ . "1851-01-06Z"^^ . . . . . "Sebastian County is a county located in the U.S. state of Arkansas. As of the 2010 census, the population was 125,744, making it the fourth-most populous county in Arkansas. The county has two county seats, Greenwood and Fort Smith.Sebastian County is part of the Fort Smith, AR-OK Metropolitan Statistical Area."@en . "1.37787e+09"^^ .