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 September 28, 2026.
Mason County, Texas, has about 4,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Mason County is held at the county jail, run by the Mason 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: Mason County public records, Mason County arrest records, Mason County warrants, Mason County criminal records, Mason County court records, Texas arrest records and Texas inmate search.
Finding Someone in Custody in Mason County
The county jail, run by the Mason County Sheriff's Office, holds everyone kept in custody after an arrest in Mason County, from every agency.
SearchSystems opened and checked the jail page of the Mason County Sheriff's Office at co.mason.tx.us/page/mason.Sheriff (page title: Mason County, Texas), phone 325-347-6937, which answered when SearchSystems opened it on September 28, 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 325-347-6937.
The Mason County Jail by the Numbers
So far in 2026 the jail has held about 1 people on an average day, up from about 1 in 2019. Its rated capacity is 5 beds, and it is running at 20 percent of it. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Mason County has about 4,000 residents (2024 Census Bureau estimate), so the jail holds about 3 people for every 10,000 residents.
Who Books People Into the Mason County Jail
The Mason County Sheriff's Office makes the arrests that end in a booking in Mason County.
The Mason County Sheriff's Office reported 1 arrests to the FBI for 2025. 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 Mason County 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 Mason County serves the sentence in a facility of the Texas Department of Criminal Justice, whose inmate locator is at inmate.tdcj.texas.gov/InmateSearch/start.
Frequently Asked Questions
How do I find an inmate in Mason County?
Ask the Mason County Sheriff's Office at 325-347-6937; its jail page SearchSystems verified is at co.mason.tx.us/page/mason.Sheriff.
How many people are in the Mason County jail?
About 1 on an average day so far in 2026, against a rated capacity of 5 beds.
What is the phone number for the Mason County jail?
325-347-6937, the number on the page of the Mason County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Mason County go?
To a facility of the Texas Department of Criminal Justice; its inmate locator is at inmate.tdcj.texas.gov/InmateSearch/start.
Is this the official Mason 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.