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 24, 2026 and October 9, 2026.
Semmes, Alabama, in Mobile County, has about 6,200 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Semmes is held at the county jail, run by the Mobile 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 and common questions.
Related guides: Semmes public records, Mobile County inmate search, Semmes arrest records, Semmes warrants, Semmes criminal records, Semmes court records, Alabama arrest records and Alabama inmate search.
Finding Someone in Custody in Semmes
A person kept in custody after an arrest in Semmes is held at the county jail, run by the Mobile County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Mobile County Sheriff's Office at mobileso.com/jail-web-portal (page title: Jail Web Portal | Mobile County Sheriff's Office), which answered when SearchSystems opened it on October 1, 2026.
That page is the office's jail information page rather than a roster.
The Mobile County Jail by the Numbers
On an average day in 2024 the jail held about 1,450 people, up from about 1,330 in 2019. Its rated capacity in 2023, the last year with a capacity figure, was 1,183 beds, and it ran at 134 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Mobile County has about 412,000 residents (2024 Census Bureau estimate), so the jail holds about 35 people for every 10,000 residents.
Who Books People Into the Mobile County Jail
The Mobile County Sheriff's Office and the agency that reports for Semmes (filed by the FBI as Semmes Police Department) make the arrests that end in a booking in and around Semmes.
The FBI's agency list also places one other agency and three campus police departments in Mobile County (the arrest records guide names each one).
The largest arrest counts reported to the FBI were Mobile's 3,776 for 2025, Saraland's 982 for 2025 and the Mobile County Sheriff's Office's 930 for 2025.
Together, the ten agencies in Mobile County with all twelve months of 2025 on file reported 6,909 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 Semmes arrest records.
Frequently Asked Questions
How do I find an inmate in Semmes?
Ask the Mobile County Sheriff's Office; its jail page SearchSystems verified is at mobileso.com/jail-web-portal.
How many people are in the Mobile County jail?
About 1,450 on an average day in 2024, the latest year in the Vera Institute's jail data, against a rated capacity of 1,183 beds.
Is this the official Semmes 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.