. "580" . "23431"^^ . "-5" . . "1.005e+08"^^ . "73533-73599" . . "1.00492e+08"^^ . . "1.87e+07"^^ . "Duncan, Oklahoma"@en . "341.986"^^ . "1.19139e+08"^^ . "Duncan is a city and county seat of Stephens County, Oklahoma, United States. The population was 23,431 at the 2010 census."@en . "-6" . . "342.0"^^ . . "1.86479e+07"^^ . "1.191e+08"^^ .