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 25, 2026.
Denison, Texas, in Grayson County, has about 26,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Denison is held at the county jail, run by the Grayson 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: Denison public records, Grayson County inmate search, Denison arrest records, Denison warrants, Denison criminal records, Denison court records, Texas arrest records and Texas inmate search.
Finding Someone in Custody in Denison
The county jail, run by the Grayson County Sheriff's Office, holds everyone kept in custody after an arrest in Denison, from every agency.
SearchSystems opened and checked the jail page of the Grayson County Sheriff's Office at co.grayson.tx.us/page/gcso.admin (page title: Administration Contact Information | Sheriff | Grayson County Tx), phone (903) 813-4408, Monday - Friday 8:00am - 5:00pm, which answered when SearchSystems opened it on September 23, 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 (903) 813-4408.
The Grayson County Jail by the Numbers
So far in 2026 the jail has held about 350 people on an average day, down from about 390 in 2019. Its rated capacity is 407 beds, and it is running at 86 percent of it. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Grayson County has about 151,000 residents (2024 Census Bureau estimate), so the jail holds about 23 people for every 10,000 residents.
Who Books People Into the Grayson County Jail
The Grayson County Sheriff's Office and the agency that reports for Denison (filed by the FBI as Denison Police Department) make the arrests that end in a booking in and around Denison.
The FBI's agency list also places ten other agencies and two campus police departments in Grayson County (the arrest records guide names each one).
The largest arrest counts reported to the FBI were Sherman's 1,050 for 2025, Denison's 551 for 2024 and the Grayson County Sheriff's Office's 399 for 2025.
Together, the 13 agencies in Grayson County with all twelve months of 2025 on file reported 1,877 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 Denison 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 Grayson 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 Denison?
Ask the Grayson County Sheriff's Office at (903) 813-4408; its jail page SearchSystems verified is at co.grayson.tx.us/page/gcso.admin.
How many people are in the Grayson County jail?
About 350 on an average day so far in 2026, against a rated capacity of 407 beds.
What is the phone number for the Grayson County jail?
(903) 813-4408, the number on the page of the Grayson County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Grayson 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 Denison 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.