"61.0"^^ . "712" . . . "-6" . "61.0428"^^ . "147"^^ . . "2.40869e+06"^^ . . . "2.41e+06"^^ . "349.91"^^ . "Castana, Iowa"@en . . "350.0"^^ . "Castana is a city in Monona County, Iowa, United States. The population was 147 at the 2010 census."@en . . "2.41e+06"^^ . . "2.40869e+06"^^ . "-5" . "0.0"^^ . "51010" .