United States · Puerto Rico · Guaynabo
Data is aggregated from public sources and may be incomplete or out of date.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.
For families
Step-by-step guidance using the United States system — addresses, money services, visit booking, what to bring on your first visit.

From Wikimedia Commons (CC-BY-SA where not otherwise stated).
Mdc Guaynabo is a federal prison located in Guaynabo County, Puerto Rico. Rated capacity: 897. Reported population: 25. Security level: Maximum. Data sourced from the HIFLD Prison Boundaries open dataset.
The Metropolitan Detention Center, Guaynabo (MDC Guaynabo) is a United States federal prison facility in Guaynabo, Puerto Rico. It holds male and female inmates of all security levels who are awaiting trial or sentencing. It is operated by the Federal Bureau of Prisons, a division of the United States Department of Justice. MDC Guaynabo is located next to Fort Buchanan U.S. Army base, and is 6 miles (9.7 km) west of San Juan, the capital of Puerto Rico. In the wake of the destruction of Hurricane Maria in September 2017, some 1200 federal prisoners were transferred from Guaynabo to the Federal Correctional Institution, Yazoo City in Mississippi.
Source: Wikipedia article lead, CC-BY-SA.
Capacity
897
Current population
25
Occupancy
3%
Year opened
—
Operational
Figures from official sources · verified 2 Jun 2026 · methodology
Operator
Federal Bureau of PrisonsPopulation held
mixed
Opened
—
Region
Puerto Rico
Security level
Maximum
Death-row facility
No
No conditions summary available yet.
Visiting days and hours are set by the Warden and vary by housing unit; consult the facility's official visiting regulations for the current schedule. All visitors must be on the inmate's approved visitor list (submitted on BOP form BP-A0629) and present government-issued photo ID. Dress-code and contraband restrictions apply — review the visiting regulations before arriving. Call 787-749-4480 to confirm hours before your visit. Full regulations: https://www.bop.gov/locations/institutions/gua/
Address mail to: [Inmate Name & Register Number], MDC Guaynabo, P.O. BOX 2005, Catano, RQ 00963. No cash, staples, or metal fasteners. Books must be sent directly from a publisher or approved retailer. Photos must not be Polaroid and may not exceed limits set by policy. Money orders payable to the inmate's name and register number; or use Western Union QuickCollect to the BOP Trust Fund. TRULINCS (CorrLinks) provides email where the inmate has subscribed.
Inmate funds via Western Union QuickCollect to the BOP Trust Fund (receiver: inmate name, prisoner ID, BOP Trust Fund). Email service via CorrLinks where the inmate has subscribed.
No major issues documented in our database.
Derived signal — not a judgement. How it's calculated
This facility scores 0. The national average across 7,437 scored United States facilities is 2 — 2 points below national average.
Same country, matched on type + security level where possible.
How many of our profile fields are populated. We surface this so families and researchers know the limits.
Under CC-BY-4.0. Include the URL and access date; the site is a living reference and entries can change.
World Prisons. (2026). Mdc Guaynabo. Retrieved July 21, 2026, from https://worldprisons.com/prisons/mdc-guaynabo
"Mdc Guaynabo." World Prisons. Accessed July 21, 2026. https://worldprisons.com/prisons/mdc-guaynabo.
@misc{worldprisons-mdc-guaynabo,
author = {{World Prisons}},
title = {Mdc Guaynabo},
year = {2026},
url = {https://worldprisons.com/prisons/mdc-guaynabo},
urldate = {2026-07-21}
}