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Prisons and jails in Illinois

Illinois has 154 prisons and jails: 3.1% of the US total of 4,960. That ranks #7 by count and #35 per person (1.21 per 100,000 residents) of 51.

#35

national rank (per capita)

154

prisons and jails

1.21

per 100k residents

The data

Source: HIFLD Prison Boundaries (U.S. Department of Homeland Security), final release, 2025. Each facility at the centre of its boundary. The Prison Policy Initiative counts 5,077 facilities (2026); counts differ by which kinds of facility are included.

Licence: U.S. government data: no copyright, free to reuse

Illinois: 154 rows (CSV)All of the US (CSV)

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Named prisons and jails in Illinois include

Massac County Jail · Pulaski County Detention Center · Pope County Jail · Dixon Springs Impact Incarceration Program (iip) · Shawnee Correctional Center · Vienna Correctional Center · Hardin County Jail · USP Marion · USP Marion Camp · Williamson County Jail · Saline County Jail · Jackson County Jail

Cite this

"Illinois has 154 prisons and jails, #7 in the US by count and #35 per person (HIFLD Prison Boundaries, 2025, mapped by InstaMaps)." Free to quote with a link to this page. Population: US Census 2024 estimates.