"51446" . "-5" . "-6" . "Irwin is a city in Shelby County, Iowa, United States, along the West Nishnabotna River. The population was 341 at the 2010 census."@en . "Irwin, Iowa"@en . . "219.4"^^ . "1.55e+06"^^ . . "1.55399e+06"^^ . "0.0"^^ . "712" . . "341"^^ . . . "393.0"^^ . "392.887"^^ . . "219.422"^^ . "1.55399e+06"^^ . . "1.55e+06"^^ .