Irwin is a city in Shelby County, Iowa, United States, along the West Nishnabotna River. The population was 319 at the time of the 2020 census.
Irwin in 1941
The Irwin Consolidated School is listed on the National Register of Historic Places
Shelby County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 11,746. The county seat is Harlan. Its name is in honor of Isaac Shelby, the first Governor of Kentucky.
Shelby County Courthouse