Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site on September 23, 2026.
St. Charles County, Missouri, has about 424,000 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from St. Charles County depends on where the incident happened: the St. Charles County Sheriff's Office for the unincorporated county, the agency that reports for the city inside a city. This guide names each agency, where its records page is and what the Missouri Sunshine Law requires of it.
This guide covers which agency, the sheriff's reports, the cities' reports, how many reports, what the law requires and common questions.
Related guides: St. Charles County public records, St. Charles County arrest records, St. Charles County warrants, St. Charles County criminal records, St. Charles County court records, Missouri arrest records and Missouri inmate search.
Which Agency Holds a Report from St. Charles County
The report of an incident is released by the agency that took it; the court and the jail hold their own records of the same event, but not the report.
In St. Charles County that is the St. Charles County Sheriff's Office for the unincorporated county and for any city that contracts with it for police service, and the agency that reports for a city where the city has one of its own.
The FBI's list also carries St. Charles Regional Drug Task Force (other agency) and St. Charles Community College (campus police), each with a records office of its own.
Reports from the St. Charles County Sheriff's Office
The St. Charles County Sheriff's Office is the county agency; it had 1 violent and 0 property crimes reported for 2025 and reported 1,032 arrests for 2025.
Its reports come from its records unit.
Reports from the City Agencies in St. Charles County
The seven cities the FBI lists in St. Charles County with a reporting agency of their own, with the police records page SearchSystems verified where the city has a guide:
- O'Fallon: 93 violent and 510 property crimes reported for 2025; 1,652 arrests reported for 2025. The O'Fallon police records page is at ofallonmo.gov/departments/police/observant_professional_dedicated/s..., phone 636-379-5678 (verified September 25, 2026).
- St. Charles: 134 violent and 600 property crimes reported for 2025; 2,309 arrests reported for 2025.
- St. Peters: 107 violent and 475 property crimes reported for 2025; 1,018 arrests reported for 2025.
- Wentzville: 69 violent and 367 property crimes reported for 2025; 1,119 arrests reported for 2025. The Wentzville police records page is at wentzvillemo.gov/residents/police-accident-reports, phone (636) 327-5105 (verified September 25, 2026).
- Lake St. Louis: 21 violent and 69 property crimes reported for 2025; 116 arrests reported for 2025.
- Cottleville: 1 violent and 4 property crimes reported for 2025; 77 arrests reported for 2024. The Cottleville police department's page is at cityofcottleville.com/police-department-employment, phone 636-939-9966 (verified September 26, 2026).
- Foristell: 100 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.
How Many Reports: St. Charles County in 2025
The eight agencies in St. Charles County with all twelve months of 2025 on file reported 541 violent and 2,275 property crimes to the FBI that year, each one a report taken by the agency that holds it.
Together, the seven agencies in St. Charles County with all twelve months of 2025 on file reported 7,625 arrests to the FBI that year, and each arrest is a report of its own.
What the Missouri Sunshine Law Requires
The Missouri Sunshine Law sets the rules: an answer within 3 business days, at a charge of research time and copying, from the agency that holds the report.
A defendant who has been charged gets the report through the case: the Prosecuting Attorney, (636) 940-4636, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in St. Charles County?
From the agency whose officer took it: the St. Charles 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.
How long does an agency in St. Charles County have to answer?
Under the Missouri Sunshine Law, within 3 business days. It may charge research time and copying.
How do I get a report from the St. Charles County Sheriff's Office?
From its records unit. Under the Missouri Sunshine Law the answer is due within 3 business days.
Is this the official St. Charles 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.