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 30, 2026 and October 4, 2026.
Warren County, Missouri, has about 38,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Warren County Sheriff's Office and three city agencies. An arrest leaves the same records whoever makes it: the arresting agency's report, the record of anyone held at the county jail, and, if the Prosecuting Attorney files charges, a case in the Warren County Circuit Court. This guide says who keeps each one, what it costs and who may see it, with the arrest counts each agency reported.
This guide covers who makes arrests, how many arrests, booking and the jail, finding an arrest, copies, cities and common questions.
Related guides: Warren County public records, Missouri arrest records, Missouri inmate search and Missouri criminal records.
Who Makes Arrests in Warren County
The Warren County Sheriff's Office is the county agency that reports arrests to the FBI for Warren County. It reported 164 arrests for 2024, its latest complete year.
The FBI lists three cities in Warren County with a reporting agency of their own, with the Census population and what each reported:
- Warrenton, 9,420 residents: 236 arrests reported for 2023.
- Wright City, 5,723 residents: 79 arrests reported for 2024.
- Truesdale, 929 residents: 9 arrests reported for 2024.
A city on that list is reported separately whether the officers are the city's own or the sheriff's under contract; the FBI's list does not say which.
The Foristell Police Department is listed by the FBI across two counties including Warren County, so its arrests are not broken out for Warren County here.
How Many Arrests Each Agency Reports in Warren County
The FBI publishes every agency's monthly arrest counts on the Crime Data Explorer. These are the full-year totals, all offenses, as the FBI held them on October 8, 2026; a year with months missing or not reported is left out.
- Warren County Sheriff's Office: 164 for 2024, 251 for 2023, 227 for 2022, 117 for 2021 and 237 for 2020.
- Wright City: 79 for 2024, 211 for 2022 and 678 for 2019; 2020, 2021 and 2023 are missing months.
- Truesdale: 9 for 2024, 5 for 2023, 12 for 2022, 120 for 2020 and 96 for 2019; 2021 is missing months.
- Warrenton: 236 for 2023, 306 for 2022, 314 for 2021, 442 for 2020 and 857 for 2019.
Together, the three agencies with all twelve months of 2024 on file reported 252 arrests that year. The two of them with both 2024 and 2023 complete reported 173 in 2024 against 256 in 2023, down 32 percent.
Warrenton reported only part of 2024 (10 months) and is left out of the totals.
Booking: Where People Arrested in Warren County Are Held
The county jail is where a person arrested in Warren County and kept in custody ends up, whichever agency made the arrest, though a city department may hold someone in its own cells first and a person cited and released at the scene is never booked. The jail's record of each person held, with the charges, is a public record of the arrest, and once the person is released or sentenced the record continues in the court file.
On an average day in 2019 the jail held about 91 people. Its rated capacity in 2019 was 104 beds, and it ran at 88 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
SearchSystems opened and checked the jail page of the Warren County Sheriff's Office at warrencomosheriff.gov (page title: Warren County Sheriff Department | Ready to Protect & Proud to Serve), phone 636-456-4332, which answered when SearchSystems opened it on October 4, 2026.
A person sentenced to prison serves the sentence in a facility of the Missouri Department of Corrections, whose inmate locator is at web.mo.gov/doc/offSearchWeb.
How to Find Out About an Arrest in Warren County
An arrest in Warren County can be traced in two places, depending on where the case stands: Case.net, the Missouri courts' free statewide case search, which shows whether charges were filed; the Prosecuting Attorney, which decides whether an arrest becomes a charge (its page is at warrencountyrecord.com/stories/new-interim-prosecutor-named-for-war..., phone (636) 456-6397).
Missouri is one of the states that lets anyone look up another person's statewide criminal history: the open record search on the MACHS site lets anyone check convictions by name, through the Missouri State Highway Patrol Criminal Justice Information Services Division. That record shows what agencies reported to the state, which is wider than one county's court index but can lag it.
Getting a Copy of an Arrest Record in Warren County
The report of an arrest is released by the agency that made it; the jail and the court hold their own records of the same event, but not the report. Under the Missouri Sunshine Law the agency must answer within 3 business days, and it may charge research time and copying.
- An arrest by the Warren County Sheriff's Office: ask its records unit, reached through the office at 636-456-4332.
- An arrest in Warrenton, Wright City or Truesdale: the records unit of the agency that reports for that city; the city guides linked above name each city's records office.
- A defendant who has been charged gets the report through the case: the Prosecuting Attorney, (636) 456-6397, handles discovery for pending cases.
- Your own statewide record: the same request described above, for your own name.
Cities in Warren County: Who Reports the Arrests
The FBI lists a separate arrest reporting agency for three of the seven cities in Warren County: Warrenton, Wright City and Truesdale. Marthasville, Innsbrook, Pendleton and Three Creeks have no separate reporting agency in the FBI's list.
Wherever in the county the arrest happens, a person kept in custody goes to the county jail and the case goes to the Warren County Circuit Court.
SearchSystems has a guide to the offices of these cities in Warren County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:
- Warrenton (9,420)
Frequently Asked Questions
How many arrests are made in Warren County each year?
The Warren County Sheriff's Office reported 164 arrests to the FBI for 2024, and the three agencies with every month of 2024 on file reported 252 between them.
How do I find out if someone is in jail in Warren County?
Ask the Warren County Sheriff's Office at 636-456-4332; its jail page SearchSystems verified is at warrencomosheriff.gov.
Where are people arrested in Warren County booked?
Those kept in custody go to the county jail, run by the Warren County Sheriff's Office; a person cited and released at the scene is not booked.
Are arrest records public in Warren County?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Missouri State Highway Patrol Criminal Justice Information Services Division: the open record search on the MACHS site lets anyone check convictions by name. The arrest report itself is released by the agency that made the arrest, under the Missouri Sunshine Law.
How do I get a copy of an arrest report in Warren County?
From the agency that made the arrest: the Warren County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Missouri Sunshine Law the answer is due within 3 business days.
Is this the official Warren 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.