The Indiana State Prison is a maximum security Indiana Department of Correction prison for adult males; however, minimum security housing also exists on the confines. It is located in Michigan City, Indiana, about 50 miles (80 km) east of Chicago. The average daily inmate population in November 2006 was 2,200, 2,165 in 2011. The Indiana State Prison was established in 1860. It was the second state prison in Indiana. One of the most famous prisoners to be in the Michigan City prison was bank robber John Dillinger, who was released on parole in 1933.

Michigan City is a city in LaPorte County, Indiana, United States. It had a population of 32,075 at the 2020 census. Located along Lake Michigan in the Michiana region, the city is about 45 miles (72 km) east of Chicago and is 40 miles (64 km) west of South Bend.