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.
Princeton, Texas, in Collin County, has about 37,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Princeton is held at the county jail, run by the Collin 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: Princeton public records, Collin County inmate search, Princeton arrest records, Princeton warrants, Princeton criminal records, Princeton court records, Texas arrest records and Texas inmate search.
Finding Someone in Custody in Princeton
A person kept in custody after an arrest in Princeton is held at the county jail, run by the Collin County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the custody page of the Collin County Sheriff's Office at collincountytx.gov/sheriff/inmate-information (page title: Inmate Information), phone (972) 547-5100, which answered when SearchSystems opened it on September 23, 2026.
That page is the place to look for someone booked recently. A person cited and released at the scene, or held only a few hours by a city department, will not be on it.
The Collin County Jail by the Numbers
So far in 2026 the jail has held about 1,170 people on an average day, up from about 1,040 in 2019. Its rated capacity is 1,488 beds, and it is running at 78 percent of it. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Collin County has about 1.3 million residents (2024 Census Bureau estimate), so the jail holds about 9 people for every 10,000 residents.
Who Books People Into the Collin County Jail
The Collin County Sheriff's Office and the agency that reports for Princeton (filed by the FBI as Princeton Police Department) make the arrests that end in a booking in and around Princeton.
The FBI's agency list also places nine other agencies and one campus police department in Collin County (the arrest records guide names each one).
The Sachse Police Department, the Garland Police Department, the Richardson Police Department and three more are each listed by the FBI across several counties including Collin County, so their arrests are not broken out for Collin County here.
The largest arrest counts reported to the FBI were Plano's 4,749 for 2025, Frisco's 2,308 for 2025 and McKinney's 1,881 for 2025.
Together, the 17 agencies in Collin County with all twelve months of 2025 on file reported 14,341 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 Princeton arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Texas Department of Criminal Justice lists its inmates at inmate.tdcj.texas.gov/InmateSearch/start.
Frequently Asked Questions
How do I find an inmate in Princeton?
Look on the custody page of the Collin County Sheriff's Office at collincountytx.gov/sheriff/inmate-information, or call (972) 547-5100. It covers people booked into the county jail.
How many people are in the Collin County jail?
About 1,170 on an average day so far in 2026, against a rated capacity of 1,488 beds.
What is the phone number for the Collin County jail?
(972) 547-5100, the number on the page of the Collin County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Collin 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 Princeton 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.