The Monroe County Inmate Population
The Monroe County inmate population is held by the Monroe County Sheriff's Office, not by a separate county corrections department. The sheriff runs the jail as one countywide system with three addresses: the Key West jail on Stock Island, the Marathon facility in the Middle Keys, and the Plantation Key facility in the Upper Keys. People arrested anywhere from Key Largo to Key West can land in this one system, which is why the public roster lists housing units like Key West Unit A through Key West Unit F and Plantation Key Unit A.
State reporting gives the population a hard number. The Florida Department of Corrections collects a monthly average daily population from every county, and its June 2024 county detention report put the Monroe County average daily population at 438. That figure counts pre-trial detainees waiting for court, people serving short county sentences, and people held on warrants or holds. It does not count Monroe County defendants who were sentenced to state prison and shipped to the Florida Department of Corrections, who are tracked in a separate state system.
The count rises and falls with arrests, first-appearance bond decisions, plea deals, and transfers. A busy arrest week pushes the roster up. A round of releases or a transfer of sentenced inmates to state prison pulls it back down.
Monroe County Inmate Population Statistics
The clearest official numbers come from the Florida Department of Corrections county detention reports, which counties file under state law. The June 2024 county detention report listed a Monroe County average daily population of 438 and a jail incarceration rate of 5.2 per 1,000 county residents. The same report tied that rate to a county population estimate of 84,511. No official rated bed capacity for the Monroe jails was published in the sheriff's pages reviewed, so a capacity number is left out rather than guessed.
Set against the rest of the state, Monroe holds a small slice of Florida's jail population but a high rate for its size. The county made up about 0.78% of the statewide county-detention average daily population in June 2024, yet its rate of 5.2 per 1,000 was more than double the statewide county rate of 2.5 per 1,000 in the same report.
| Measure | Figure | Source / Year |
|---|---|---|
| Average daily population | 438 | FDC County Detention report, June 2024 |
| Jail incarceration rate | 5.2 per 1,000 residents | FDC, June 2024 |
| Share of statewide county-detention ADP | 0.78% | FDC, June 2024 |
| County population basis | 84,511 | UF BEBR estimate (Apr 2023), via FDC June 2024 |
| Pre-trial share, Jail/Main | 59.7% | FDC County Detention report, Jan 2024 |
Monroe County Inmate Population Trends
The monthly state reports make it possible to watch the population move across a year. In its January 2024 report, the Florida Department of Corrections listed Monroe County Jail/Main with an average daily population of 382. By the June 2024 report, that number had climbed to 438. The same monthly series keeps running, so the most current snapshot is always the live county roster, which carries an as-of date and time rather than a tidy monthly average.
| Period | Average Daily Population | Notes |
|---|---|---|
| January 2024 | 382 | FDC monthly report, Monroe County Jail/Main |
| June 2024 | 438 | FDC monthly report; rate 5.2 per 1,000 |
| 2026 (live) | Live roster count | MCSO current-inmate roster; no official summary total is posted |
Florida posts these reports through its state corrections data and explains the requirement in an OPPAGA policy note. Numbers move with policy too. Bond schedule changes, sentencing, and transfers to state prison all show up in later months.
Who Makes Up the Monroe County Inmate Population
Most people in the jail are still waiting for their cases to resolve. The January 2024 state report broke Monroe County Jail/Main into pre-trial categories and showed pre-trial inmates at 59.7% of that month's count, with 190 pre-trial felony inmates and 38 pre-trial misdemeanor inmates. That makes the jail mainly a pre-trial holding system rather than a place where most people are serving a sentence.
- Pre-trial vs sentenced - Pre-trial inmates were 59.7% of the Jail/Main count in the January 2024 state report, so most held people are awaiting court, not serving a term.
- Felony vs misdemeanor - The same report listed 190 pre-trial felony inmates and 38 pre-trial misdemeanor inmates, so felony cases drive most of the count.
- Sex and race - The public roster table shows age and housing only; sex and race appear on the separate current-arrests records, not in an official countywide breakdown.
- Holds and warrants - Some people sit on out-of-county warrants, probation-violation holds, or no-bond holds that keep them in custody even when another charge has bond.
Monroe County Jail Capacity and Reporting
A rated bed capacity for the Key West, Marathon, and Plantation Key facilities was not published in the official sheriff pages reviewed, so this site does not state one. What the state does publish is the average daily population and the jail incarceration rate, which together show how heavily the county uses its jail space. Monroe's 5.2 per 1,000 rate in June 2024 was high for Florida, which can reflect a small resident population, a steady stream of arrests across a long chain of islands, and a large pre-trial share waiting on court dates.
No current jail consent decree, lawsuit settlement, or new-construction notice was found in the official sources reviewed. Anyone tracking that should watch sheriff releases, county commission agendas, and local court filings for updates.
Laws Governing the Monroe County Inmate Population
A handful of Florida laws make the jail population public and set how it is run and reported. The state's open-records law starts from broad access, a separate statute requires counties to report their jail population to the state, and jail standards govern day-to-day operations. Sealing and expunction laws can later limit what stays public for an individual record.
Key Statutes:
Florida Statutes § Chapter 119 - Florida's public-records law, which treats records made or received by the sheriff and the county as public unless an exemption applies.
Florida Statutes § 951.23 - Sets county detention standards and definitions and requires the county jail population reporting the state uses for its monthly average daily population figures.
Florida Model Jail Standards - Establishes operating standards and inspections for county and municipal jails like the Monroe County facilities.
Florida Statutes § 406.12 - Routes deaths that may include in-custody deaths to a medical examiner for investigation.
Monroe County and the State Prison Population
When a Monroe County defendant is sentenced to state prison, the person leaves the county count and joins the Florida Department of Corrections population. There is no state prison physically inside Monroe County, so a sentenced person is moved out of the Keys to a state reception center and then to an assigned institution. After that move, the county roster usually drops the name, and the right place to look becomes the Florida Department of Corrections offender search. The state notes that its inmate population data is refreshed weekly, with release dates and location changes updated nightly, which is why a freshly sentenced person can take time to appear.
How to Search the Monroe County Inmate Population
The county current-inmate page does not work like a normal database with a search box. The Monroe County Sheriff's Office posts the roster as a long live table and tells the public to use the browser's built-in Find feature to jump to a name. The list carries an as-of date and time at the top, so it reflects current custody rather than old bookings.
Before starting, have the person's last name ready. A middle name and an age help when several people share a surname, because the public roster does not show a date of birth.
- Open the sheriff's current inmates page at keysso.net/jailog and note the as-of timestamp.
- Press and hold CTRL and tap F to open the browser Find box, then type the last name.
- Step through each match and compare the MNI ID, first and middle name, age, and housing location.
- Read every charge line and every bond line, since a person can carry several cases or a no-bond hold.
- If the person is not listed, check the current arrests page, call Jail Records at 305-293-7400, or search the state locator for a sentenced inmate.
Current Inmate Lookup in Monroe County
The live roster is free and needs no login. Each entry shows a master name index (MNI) number, the name, age when available, a housing location, the charge lines, and bond and case details. Because the page is one table, the browser Find tool is the search method rather than form fields. The table below lists what the roster actually accepts and shows.
The county publishes this list on the sheriff's current inmates page.
The capture shows the as-of timestamp and the column layout a Monroe County inmate search returns.
| Field Label | Type | Required | Notes |
|---|---|---|---|
| Browser Find / CTRL-F | Browser text find | Intended method | The roster has no search box; the sheriff instructs users to use built-in Find. |
| Last Name / First Middle / ID | Roster column | n/a | Shows name and an MNI ID such as MCSO18MNI003783. |
| Age | Roster column | n/a | Numeric age when available. |
| Location | Roster column | n/a | Examples: Key West Unit A-F, Plantation Key Unit A, Not Assigned. |
| Charges | Roster column | n/a | Count, statute, and short description per line. |
| Bond - Case# / Arraignment | Roster column | n/a | Amount or No Bond, plus case number and arraignment date and time. |
Past and Released Inmate Records
The county roster is a snapshot of who is in custody now, not a history file. The sheriff's pages do not promise that a released person stays online for any set number of hours or days. Once someone is released, the best route to a past booking record is a public-records request to the sheriff through the JustFOIA portal, citing the name, arrest date, MNI number, and offense or case number if known.
For someone who was sentenced and sent to state prison, the trail moves to the state offender search, which also offers release and supervision databases. Court charges, filings, and dispositions live with the clerk rather than the jail, so a released person's case history is often easiest to find in the court index.
What a Monroe County Inmate Record Shows
A current-inmate entry is built to answer two questions fast: who is held and on what. It does not carry a mugshot or arrest-time detail, which sit on the separate current-arrests page. The fields below come straight from the live county data.
| Field | What It Shows |
|---|---|
| MNI ID | The sheriff's master name index number used for mail, deposits, and roster identity. |
| Name | Last, first, and middle name as the public columns display them. |
| Age | A basic identity clue when names are similar; no public date of birth is shown. |
| Location | The current housing assignment, such as Key West Unit A or Plantation Key Unit A. |
| Charges | One or more charge lines with a count, a Florida statute number, and a short description. |
| Bond / Case / Arraignment | Amount or No Bond, the court case number, and the arraignment date and time. |
Booking photos and arrest-time fields appear instead on the Monroe County jail mugshots page, which draws from the sheriff's current arrests feed.
County Jail vs. State Prison: Where to Look
Readers mix up the county jail and the state prison system constantly. The county jail holds pre-trial detainees and people serving short local sentences, and the sheriff runs its roster. Sentenced felons move to a Florida Department of Corrections prison with its own locator. The table sorts out which system covers which part of the inmate population.
| County Jail | State Prison (DOC) | |
|---|---|---|
| Who Is Held | Pre-trial and short local sentences | Sentenced felons |
| Run By | Monroe County Sheriff's Office | Florida Department of Corrections |
| Where to Look | County current-inmate roster | State offender search |
| Stays Listed | While in county custody now | Through sentence; weekly data refresh |
State and Federal Inmate Search
When the county roster comes up empty, the next tool depends on who has custody. Sentenced state prisoners are in the Florida Department of Corrections offender search. Federal inmates appear in the federal Bureau of Prisons locator, which covers federal custody from 1982 to the present. Immigration detainees show up in the ICE Online Detainee Locator System, which needs an A-number or an exact name plus country of birth and cannot search anyone under 18. For custody and release notifications across these systems, VINELink offers a statewide alert option.
The state system starts at the FDC offender search menu.
Its menu splits the inmate population search from the release, escape, and supervision databases.
Monroe County Detention Facilities
The county holds its inmate population at three detention facilities spaced along the Keys, all run by the sheriff and all reported through the same current-inmate system. No state prison, federal Bureau of Prisons institution, or ICE facility sits inside the county.
- Monroe County Key West Detention Center - The main jail on Stock Island, holding most pre-trial and local sentenced inmates for the Lower Keys.
- Monroe County Marathon Detention Facility - The Middle Keys detention facility, part of the same countywide roster.
- Monroe County Plantation Key Detention Facility - The Upper Keys facility in Tavernier, with public roster units such as Plantation Key Unit A.
Inmate Roster Terms Defined
A few terms appear over and over on the roster and in bond lines. Plain definitions make the records easier to read.
- MNI
- The sheriff's master name index number, the inmate ID used for mail, money deposits, and roster identity.
- No Bond
- A public label meaning no bond amount is set for that charge or hold, so it does not allow release by itself.
- Hold / Detainer
- Another legal reason to keep a person in custody, such as a probation hold or a request from another agency.
- Classification
- The housing and security decision the jail makes after first appearance, based on medical, criminal, and charge information.
- PR bond
- Release on personal recognizance, a promise to appear in court that may not show as a dollar amount.
Monroe County Inmate Population FAQ
How big is the Monroe County inmate population?
The Florida Department of Corrections June 2024 county detention report listed a Monroe County average daily population of 438, with a jail incarceration rate of 5.2 per 1,000 residents. The figure was 382 in the state's January 2024 report. The live county roster carries the most current count, shown with an as-of date and time rather than a monthly average.
How do I search the Monroe County inmate population?
Open the sheriff's current inmates page, press CTRL-F to open the browser Find box, and type the last name. The roster is one long table without a search form. Compare the MNI number, name, age, and housing location to confirm the right person, then read every charge and bond line.
Can I look up a released or past inmate?
The county roster shows current custody, not history, and the sheriff does not promise a release stays online for any set time. For a past booking record, file a public-records request with the sheriff. For someone sentenced to prison, use the Florida Department of Corrections offender search instead.
Why does someone show "No Bond" or a zero bond?
No Bond means no release amount is set for that charge or hold, often tied to a probation violation or a court order. A zero or $0.00 entry is not a promise of free release. Read every bond line and call Jail Records before sending any money.
Where do mugshots appear?
The current-inmate roster does not carry booking photos. Recent booking photos appear on the sheriff's current arrests page, covered on the jail mugshots page. Older or removed photos require a public-records request.
What if the person was just arrested?
A very recent arrestee may show on the current arrests page before the current-inmate roster updates. The two feeds carry slightly different as-of times. If a recent arrestee does not appear in either, call Jail Records at 305-293-7400.