Maryland has 53 prisons and jails: 1.1% of the US total of 4,960. That ranks #34 by count and #44 per person (0.85 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
Local blogs, news sites, parks pages: embed the live interactive map with one snippet. Attribution stays on, that's the whole deal.
<iframe src="https://get-instamaps.com/embed/rankings/prisons-jails/maryland" width="100%" height="440" style="border:2px solid #111" loading="lazy" title="Maryland prisons and jails map — InstaMaps"></iframe>Somerset County Detention Center · Eastern Correctional Institution · Worcester County Jail · St. Mary's County Detention Center · Poplar Hill Pre-Release Unit · Wicomico County Detention Center · Southern Maryland Pre-Release Unit · Charles County Detention Center / Annex · Calvert County Detention Center · Dorchester County Detention Center · Talbot County Detention Center · Prince George's County Correctional Center
"Maryland has 53 prisons and jails, #34 in the US by count and #44 per person (HIFLD Prison Boundaries, 2025, mapped by InstaMaps)." Free to quote with a link to this page. Population: US Census 2024 estimates.