ZIP Code 51446
About Irwin
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.
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Area Profile
US Census (ACS 5-year · Gazetteer)
437
population
$61,750
median household income
12
people / sq mi
$94,200
median home value
$700
median gross rent
50.3
median age
226
housing units
209
households
35.8
land area (sq mi)