Monroe County Marathon Detention Facility Roster Search

Monroe County Marathon Detention Facility Overview

The Monroe County Marathon Detention Facility is located at 3981 Ocean Terrace in Marathon and serves the Middle Keys region of Monroe County. The Monroe County Sheriff's Office operates it as one of three county detention addresses spread along the Overseas Highway, with the Key West facility to the south and the Plantation Key facility to the north in Tavernier. People arrested by MCSO or other law-enforcement agencies operating in the Middle Keys area may be held at this Marathon location. Like the other Monroe County facilities, it holds pre-trial detainees awaiting court and people serving short local sentences, not state-sentenced prisoners.

The MCSO visitation schedule refers to this location as Marathon Jail and lists it alongside Key West Jail and Plantation Key Jail as one of the Monroe County detention facilities. The public current-inmate roster is the same countywide system for all three locations. A person held at this facility would appear on the same MCSO current-inmate page as someone held at Key West or Plantation Key, with a facility or unit designation in the Location column when that information is populated. The Monroe County Sheriff's Office reports the county system collectively to the state for population tracking purposes.

No facility-specific rated bed capacity for the Marathon location was published in the official MCSO pages reviewed. The MCSO homepage states the Monroe County Sheriff's Office is state and nationally accredited, and Florida Model Jail Standards apply to this facility as they do to all county and municipal detention facilities in Florida. Once a person sentenced in Monroe County is ordered to state prison, that person leaves the county roster and moves to the Florida Department of Corrections system, which has no institution inside Monroe County itself.

Marathon Detention Facility Capacity and Population

No rated bed capacity specific to the Monroe County Marathon Detention Facility was found in official MCSO pages or state reports reviewed. Publishing an invented number would be inaccurate, so none is given here. For countywide reference, the Florida Department of Corrections June 2024 county detention report placed the Monroe County average daily population at 438 across the system reported as Monroe County Jail/Main. That figure spans all three Monroe County facilities, not Marathon alone. Monroe County's jail incarceration rate of 5.2 per 1,000 residents in the June 2024 report was more than double the statewide county rate of 2.5 per 1,000 the same month. The live sheriff roster carries the most current picture of who is in custody, updated throughout the day with an as-of timestamp.

How to Search the Monroe County Marathon Detention Roster

There is no separate Marathon-specific roster. All three Monroe County facilities share the same MCSO current-inmate system at keysso.net/jailog. The page does not offer a search field; MCSO instructs visitors to use the browser's built-in Find function. On most Windows computers that means pressing CTRL-F, typing a last name, and stepping through the results in the full table. Each row shows an MNI identification number, the person's name, age, a Location field, charge lines, and bond/case/arraignment information. A person housed in Marathon might show a Marathon designation in the Location column, though specific unit naming conventions can vary.

The current-inmate roster shows who is in custody at the time the page loads, not a booking history. Someone who has been released will no longer appear. The separate current-arrests page at keysso.net/arrests shows recent bookings by date along with booking photos; that page is more useful for confirming a recent arrest or finding a mugshot than for checking current custody. For any confusion about a roster entry, or for a name that does not appear online, Jail Records at 305-293-7400 and the Marathon direct line at 305-289-2420 are the right contacts.

The jail rules page covers the countywide jail procedures that apply to this facility.

The same rules govern mail, money, phones, tablets, classification, and inmate conduct across Key West, Marathon, and Plantation Key.

1. Open the Monroe County Sheriff's current-inmate roster at keysso.net/jailog and check the as-of timestamp at the top of the page.
2. Press CTRL-F to open the browser Find box, type the person's last name, and step through any matches.
3. Compare the MNI number, first and middle name, and age to confirm the correct person.
4. Check the Location column for a Marathon facility designation or another location if the person may have been moved.
5. Read every charge line and every bond/case line because one person can carry multiple cases or holds.
6. If no match appears, check the recent-arrests page at keysso.net/arrests, call Jail Records at 305-293-7400 or Marathon directly at 305-289-2420, or file a public-records request through the MCSO JustFOIA portal at monroecountysherifffl.justfoia.com.
7. For anyone sentenced and transferred to state prison, search the Florida Department of Corrections offender search by name or DC number.

Note: The current-inmate roster does not include booking photos; those appear on the current-arrests page organized by date.

The Monroe County jail inmate records page lays out the full set of lookup channels for the county system, including phone fallbacks and the public-records request process for older or released-inmate information.

Monroe County Marathon Detention Facility Address and Contact

The facility is on Ocean Terrace in Marathon, accessible from U.S. 1, the Overseas Highway, which runs through the Middle Keys. Visitors and callers with questions about a specific inmate can reach the Marathon facility directly. Jail Records at 305-293-7400 covers questions about roster entries for any of the three Monroe County locations. Parking and transit details are not published on official MCSO pages; call the facility before arriving to confirm visitor access and parking availability.

All visitors 18 and older must register and present valid government-issued photo identification. Personal property including cell phones, keys, and wallets must be secured before entry. Visitor lockers at the Key West facility cost 25 cents and require quarters; confirm locker availability with this Marathon facility by phone before arriving.

Visiting the Monroe County Marathon Detention Facility

All Monroe County detention facilities, including Marathon, offer video visitation only. The MCSO states that video visitation is the only option for visiting a Monroe County Detention Center inmate, so there are no in-person contact visits at this location. Visits can happen onsite at the Marathon jail or offsite from a home computer or handheld device using ICSolutions software. All sessions are monitored and recorded and last 30 minutes. Appointments can be scheduled as early as 12 hours before the session or up to two weeks in advance.

Onsite video sessions at the Marathon facility run Monday through Friday during two daytime windows. No onsite video visits take place on weekends or on listed holidays, which include New Year's Day, Martin Luther King Day, Presidents Day, Good Friday, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, the day after Thanksgiving, and Christmas Day. Offsite home visits from a personal device are available every day of the week including holidays, with a daytime schedule and an additional evening window. Only two visitors may attend one onsite session: two adults or one adult and one child. Children must bring original birth certificate or guardianship paperwork.

Visitors must be 18 or older with valid government-issued photo ID. A victim or witness listed in the inmate's case cannot visit without a court order clearing that person, presented to visitation staff before the session begins. If the inmate is in medical care, at work, in a program class, on recreation, or at an attorney visit, the scheduled session may be cancelled and must be rescheduled for the following available time. Offsite visits are not allowed from bedrooms or bathrooms. Both the inmate and the visitor should log in a few minutes before the scheduled session time.

For questions about scheduling a visit at the Marathon facility, call 305-289-2420 or the main jail line at 305-293-7300.

Mail, Phone, and Money at the Monroe County Marathon Detention Facility

Personal mail sent to an inmate at any Monroe County facility, including Marathon, does not go to the physical building. MCSO routes personal mail from family and friends to a scanning address in Phoenix, Maryland, where the correspondence is converted and delivered digitally through each inmate's tablet "Facility Messages" account. The personal mail address format includes the facility name, the inmate's full name, and the MNI number. Legal mail and pre-approved packages are an exception and go directly to the Marathon facility at 3981 Ocean Terrace. Money orders for Marathon inmates can be dropped off at this Middle Keys facility; the MCSO rules note that money orders are no longer accepted at the Key West location but can still be used at the Marathon and Plantation Key facilities when printed with the inmate's name as it appears on an ID and the sender's complete name and mailing address.

The phone system at all Monroe County facilities uses ICSolutions. Families can reach ICSolutions at 888-506-8407 for help with blocked or unblocked calls and account questions. Tablet availability at the Marathon facility was not explicitly confirmed in the MCSO jail rules text; the official rules state that tablet services became available at the Key West and Plantation facilities in August 2022. Confirm tablet access at Marathon by calling 305-289-2420 before loading funds onto a tablet account for an inmate there.

TouchPay manages all inmate money accounts across Monroe County. The Monroe County Detention Center Facility Locator number is 233001 for all three facilities. Deposits can be made by phone at 1-866-232-1899, online through TouchPay Direct, or in person at the kiosk in the lobby of the Main Detention Facility in Key West. All money and legal tender brought by a person at the time of booking is receipted and deposited into an account with a $20 processing fee. That account balance can be used for commissary and is returned by check at release.

Booking and Intake at the Monroe County Marathon Detention Facility

The booking process at Marathon follows the same MCSO intake rules as the other county facilities. When a person is brought in after an arrest, the process covers identification, charge entry, a booking photo, property inventory, and a medical screening. All money is receipted and deposited with a $20 processing fee. Personal property is held in a secure location until release or transfer. An inmate may keep eyeglasses, one simple wedding band with no diamonds or protruding stones, one pair of plain white socks if already wearing them, and one plain white short-sleeved t-shirt if already wearing it at the time of booking. No personal medication is allowed; the contracted medical provider handles medication assessment at intake.

After a first-appearance hearing, the Classification unit interviews the inmate using self-reported medical history, criminal history, past institutional behavior, and current charges. The resulting housing assignment determines the Location field on the public roster. Reclassification happens every 30 days based on behavior, new charges, officer comments, and medical factors. Every inmate receives a copy of the MCSO inmate handbook during the intake process. Inmates may use a telephone to notify family, an attorney, or to arrange bond after booking is complete.

Once someone is sentenced to state prison, they leave the county roster and move to the Florida Department of Corrections system. That transfer typically removes the person from the MCSO current-inmate page. The FDC offender search is then the right tool, and the Monroe County Inmate Population home page explains when the county roster stops being the right place to look.

Monroe County Marathon Jail Records and Access

Records that are not visible on the public roster can be requested through the MCSO JustFOIA portal at monroecountysherifffl.justfoia.com. A useful request includes the inmate's full name, the MNI number if known, the arrest date, and any offense or case number visible on the arrests page. Florida Chapter 119 gives broad public access to records held by government agencies, subject to statutory exemptions for sealed records, active investigations, and other protected categories. The Monroe County Sheriff's Office holds booking records and incident reports for Marathon arrests; the Monroe County Clerk of the Circuit Court holds court filings and case events after a charge is formally filed.

The Marathon clerk office is at 3117 Overseas Highway in Marathon and can be reached at 305-289-6027. Court charges filed after an arrest can differ from the booking charges on the MCSO roster, because the State Attorney may add, amend, or dismiss counts when deciding what to file. The clerk's criminal case search at cr.monroe-clerk.com lets the public search by first and last name or by case number copied from the roster's bond line. For records held by the prosecutor, public-records requests go to the Monroe County State Attorney's Office with the case number and defendant name. The Monroe County jail inmate records page covers all of these lookup routes in detail.

Programs and Conditions at Monroe County Marathon Detention Facility

The Monroe County Sheriff's Office jail rules apply across all three facilities and describe the programs and services available to inmates. Outdoor recreation is offered at each facility on a schedule based on housing assignment. Substance abuse programming covers individual and group counseling, prevention education, and life skills sessions for inmates ordered to the program or who volunteer. NA and AA groups are available to eligible inmates when a program is available at the facility. Education programs include Adult Basic Education, GED preparation, and literacy tutoring, with interested inmates submitting request forms through the Programs Director.

Library services consist of reading materials stocked in housing areas and, where tablet services are confirmed, access to materials and the law library through the tablet system. Pro-se inmates in active trial may request daily access to legal materials through the proper request process. MCSO employees do not provide legal advice. The classification system schedules reclassification every 30 days and allows written appeals within 10 days of a classification decision.

The Monroe County Marathon Detention Facility is part of the same accredited Monroe County Sheriff's Office system as the Key West and Plantation Key facilities. The Monroe County Key West Detention Center is the primary facility and the location of the TouchPay deposit kiosk; the Monroe County Plantation Key Detention Facility in Tavernier serves the Upper Keys. All three feed into the same MCSO countywide roster and follow the same inmate rules and visitation schedule.