"Keystone, Iowa"@en . "-6" . "1.17e+06"^^ . "0.0"^^ . "52249" . . "Keystone is a city in Benton County, Iowa, United States. The population was 622 at the 2010 census. It is part of the Cedar Rapids Metropolitan Statistical Area."@en . "533.67"^^ . "319" . . "1.16549e+06"^^ . "269.138"^^ . "1.17e+06"^^ . "622"^^ . . "269.0"^^ . . . . "533.7"^^ . . "1.16549e+06"^^ . "-5" .