World Prisons

Prisons

7,437 facilities indexed. Filter by country, security level, type, or gender. Click any card for contact details, visiting rules, and conditions.

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Data is aggregated from public sources and may be incomplete or out of date. Always verify with primary sources before acting on any figure. See data sources.

Menard Medium Security Unit

United States · Menard

Medium

Type

State prison

Capacity

394

Held

394

Overcrowded (100%)Low

Mendocino County Jail

United States · Ukiah

Type

—

Capacity

—

Held

—

Mendocino County Jail / Sheriff

United States · Ukiah

Type

County jail

Capacity

—

Held

303

Mendocino County Juvenile Hall

United States · Ukiah

Juvenile

Type

County jail

Capacity

40

Held

—

Mendota Juvenile Treatment Center

United States · Madison

Juvenile

Type

State prison

Capacity

43

Held

28

Under capacity (65%)Low

Menominee County Jail

United States · Menominee

Type

County jail

Capacity

51

Held

31

Under capacity (61%)Low

Menominee Tribal Jail

United States · Keshena

Type

Local jail

Capacity

45

Held

—

Men'S Central Jail

United States · Los Angeles

Maximum

Type

County jail

Capacity

6,750

Held

4,281

Under capacity (63%)

Men's House of Detention

United States

Type

—

Capacity

—

Held

—

Men's State Prison

United States

Medium

Type

—

Capacity

—

Held

—

Merced Assembly Center

United States · Merced

Type

—

Capacity

—

Held

—

Merced County Jail

United States · Merced

Type

County jail

Capacity

—

Held

202

Merced County Juvenile Hall

United States · Merced

Type

—

Capacity

—

Held

—

Mercer County Correctional Center

United States · Lambertville

Maximum

Type

County jail

Capacity

880

Held

—

Mercer County Detention Facility

United States · Celina

Type

County jail

Capacity

—

Held

75

Mercer County Jail

United States · Aledo

Maximum

Type

County jail

Capacity

102

Held

64

Under capacity (63%)

Mercer County Jail

United States · Aledo

Type

—

Capacity

—

Held

—

Meriwether County Jail

United States · Greenville

Type

County jail

Capacity

—

Held

10

Merrick County Jail

United States · Central City

Type

County jail

Capacity

12

Held

9

Under capacity (75%)Low

Merrimac Juvenile Detention Center

United States · Williamsburg

Juvenile

Type

County jail

Capacity

48

Held

—

Merrimack County House Of Corrections

United States · Boscawen

Maximum

Type

County jail

Capacity

237

Held

232

Under capacity (98%)Low

Merrimack County Jail

United States

Type

—

Capacity

—

Held

—

Mesa County Community Corrections - Chipeta Building

United States · Grand Junction

Type

County jail

Capacity

—

Held

—

Mesa County Community Corrections - Powell Building

United States · Grand Junction

Type

County jail

Capacity

—

Held

—

Mesa County Jail / Sheriff

United States · Grand Junction

Type

County jail

Capacity

440

Held

574

Overcrowded (130%)Low

Mesa Verde Detention Facility

United States · Bakersfield

Minimum

Type

Multi-jurisdictional facility

Capacity

400

Held

387

Under capacity (97%)Low

Mesa Verde ICE Processing Center

United States · Bakersfield

Type

Private ICE Detention Center (CDF contract)

Capacity

320

Held

377

Overcrowded (118%)

Mesquite City Jail

United States · Mesquite

Type

Local jail

Capacity

—

Held

18

Mesquite Detention Center

United States · Mesquite

Type

Local jail

Capacity

20

Held

—

Metcalfe County Jail

United States

Type

—

Capacity

—

Held

—