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 4, 2026.
Simpson County, Mississippi, has about 26,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Simpson County is held at the county jail, run by the Simpson 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: Simpson County public records, Simpson County arrest records, Simpson County warrants, Simpson County criminal records, Simpson County court records, Mississippi arrest records and Mississippi inmate search.
Finding Someone in Custody in Simpson County
A person kept in custody after an arrest in Simpson County is held at the county jail, run by the Simpson County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Simpson County Sheriff's Office at simpsoncountyms.com/sheriffs-office (page title: Simpson County), phone 601-847-2155, 111 West Pine Ave, Ste. 2, Mendenhall, MS 39114, which answered when SearchSystems opened it on October 4, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at 601-847-2155.
The Simpson County Jail by the Numbers
On an average day in 2019 the jail held about 110 people. Its rated capacity in 2019 was 163 beds, and it ran at 67 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Simpson County has about 26,000 residents (2024 Census Bureau estimate), so the jail holds about 43 people for every 10,000 residents.
Who Books People Into the Simpson County Jail
The Simpson County Sheriff's Office and the agencies that report for Magee and Mendenhall make the arrests that end in a booking in Simpson County.
The largest arrest counts reported to the FBI were the Simpson County Sheriff's Office's 224 for 2025, Magee's 195 for 2025 and Mendenhall's 48 for 2024.
Together, the two agencies in Simpson County with all twelve months of 2025 on file reported 419 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 Simpson County arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Mississippi Department of Corrections lists its inmates at mdoc.ms.gov/inmate_search.
Frequently Asked Questions
How do I find an inmate in Simpson County?
Ask the Simpson County Sheriff's Office at 601-847-2155; its jail page SearchSystems verified is at simpsoncountyms.com/sheriffs-office.
How many people are in the Simpson County jail?
About 110 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 163 beds.
What is the phone number for the Simpson County jail?
601-847-2155, the number on the page of the Simpson County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Simpson County go?
To a facility of the Mississippi Department of Corrections; its inmate locator is at mdoc.ms.gov/inmate_search.
Is this the official Simpson County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.