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 between September 23, 2026 and September 25, 2026.
O'Fallon, Missouri, in St. Charles County, has about 95,000 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from O'Fallon depends on where the incident happened. 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 city's records page, the sheriff's reports, what the law requires and common questions.
Related guides: O'Fallon public records, St. Charles County police reports, O'Fallon arrest records, O'Fallon warrants, O'Fallon criminal records, O'Fallon court records, Missouri arrest records and Missouri inmate search.
Which Agency Holds a Report from O'Fallon
A crime, incident or collision report belongs to the agency whose officer wrote it, and that agency releases it, not the court, the jail or the prosecutor.
Inside O'Fallon that is the agency that reports to the FBI for the city (filed by the FBI as O'Fallon Police Department); outside it, the St. Charles County Sheriff's Office.
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 O'Fallon Police
For O'Fallon, SearchSystems opened and checked the O'Fallon police records page at ofallonmo.gov/departments/police/observant_professional_dedicated/s... (page title: City of O'Fallon, MO), phone 636-379-5678, 2650 Tri Sports Circle O'Fallon, MO 63368, which answered when SearchSystems opened it on September 25, 2026.
The agency that reports for O'Fallon had 93 violent and 510 property crimes reported for 2025 and reported 1,652 arrests for 2025.
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.
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 O'Fallon?
From the agency that took it. The O'Fallon police records page is at ofallonmo.gov, phone 636-379-5678; the sheriff's reports come from the St. Charles County Sheriff's Office.
How long does an agency in O'Fallon 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 O'Fallon 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.