Irwin is a village in Kankakee County, Illinois, United States.

It is included in the Kankakee-Bradley, Illinois Metropolitan Statistical Area.

According to the 2010 census, Irwin has a total area of 0.04 square miles (0.10 km2), all land.

There were 34 housing units at an average density of 500.8 per square mile (193.4/km2).

32.4% of all households were made up of individuals, and 26.5% had someone living alone who was 65 years of age or older.