Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 9, 2026.
Key West, Florida, in Monroe County, has about 25,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Key West is held at the county jail, run by the Monroe County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Key West public records, Monroe County inmate search, Key West arrest records, Key West warrants, Key West police reports, Key West property records, Florida arrest records and Florida inmate search.
Finding Someone in Custody in Key West
The county jail, run by the Monroe County Sheriff's Office, holds everyone kept in custody after an arrest in Key West, from every agency.
SearchSystems opened and checked the jail page of the Monroe County Sheriff's Office at monroecosheriffga.us/offender-search (page title: Offender Search | mcso-html), which answered when SearchSystems opened it on October 9, 2026.
That page is the office's jail information page rather than a roster.
The Monroe County Jail by the Numbers
So far in 2026 the jail has held about 210 people on an average day, down from about 590 in 2019. Its rated capacity in 2023, the last year with a capacity figure, was 707 beds, and it ran at 63 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Monroe County has about 81,000 residents (2024 Census Bureau estimate), so the jail holds about 26 people for every 10,000 residents.
Who Books People Into the Monroe County Jail
The Monroe County Sheriff's Office and the agency that reports for Key West (filed by the FBI as Key West Police Department) make the arrests that end in a booking in and around Key West.
The FBI's agency list also places one state police unit and five state agencies in Monroe County (the arrest records guide names each one).
The largest arrest counts reported to the FBI were the Monroe County Sheriff's Office's 3,367 for 2025 and Key West's 933 for 2025.
Together, the two agencies in Monroe County with all twelve months of 2025 on file reported 4,300 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Key West arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Monroe County serves the sentence in a facility of the Florida Department of Corrections, whose inmate locator is at fdc.myflorida.com.
Frequently Asked Questions
How do I find an inmate in Key West?
Ask the Monroe County Sheriff's Office; its jail page SearchSystems verified is at monroecosheriffga.us/offender-search.
How many people are in the Monroe County jail?
About 210 on an average day so far in 2026, against a rated capacity of 707 beds.
Where do people sentenced to prison in Monroe County go?
To a facility of the Florida Department of Corrections; its inmate locator is at fdc.myflorida.com.
Is this the official Key West website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.