"636" . "130.0"^^ . "-5" . "129.54"^^ . "-6" . . "1.479e+07"^^ . "784.521"^^ . "1.47888e+07"^^ . . . . . "Mayor"@en . "Festus is a city in Jefferson County, Missouri, United States. The population was 11,602 at the 2010 census. Festus and its neighbor Crystal City are often collectively known as the \"Twin Cities\"; however, they are incorporated separately."@en . "784.5"^^ . "1.479e+07"^^ . . "0.0"^^ . . "63028" . "11602"^^ . "1.47888e+07"^^ . "Festus, Missouri"@en .