. . "0.810815"^^ . "0.4"^^ . "9.29029e+09"^^ . . "2010Z"^^ . "Madison County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 7,691. Its county seat is Virginia City. The county was founded in 1865."@en . "town" . . "3.88498e+07"^^ . . "Madison County"@en . "7691"^^ . . "9.33173e+09"^^ .