Idaho has 53 prisons and jails: 1.1% of the US total of 4,960. That ranks #32 by count and #14 per person (2.65 per 100,000 residents) of 51.
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
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<iframe src="https://get-instamaps.com/embed/rankings/prisons-jails/idaho" width="100%" height="440" style="border:2px solid #111" loading="lazy" title="Idaho prisons and jails map — InstaMaps"></iframe>Franklin County Jail · Mini-Cassia Criminal Justice Center · Twin Falls Adult Detention Facility · Caribou County Jail · Jerome County Jail · Power County Jail · Bannock County Detention Center · Pocatello Women's Correctional Center · Gooding County Jail · Elmore County Detention Center · Bingham County Jail · Owyhee County Jail
"Idaho has 53 prisons and jails, #32 in the US by count and #14 per person (HIFLD Prison Boundaries, 2025, mapped by InstaMaps)." Free to quote with a link to this page. Population: US Census 2024 estimates.