Sheriff in O'Fallon, Missouri

The county sheriff office serves residents of Ofallon and the surrounding unincorporated areas with law enforcement, civil process, and jail services. There are 2 Sheriff locations in Ofallon, Missouri.

If you need to post bail, check on an inmate, request a police report, or have legal documents served within the county, the sheriff office listed here is your primary resource. Bring a valid government-issued photo ID for all in-person transactions.

Residents of Ofallon can use the sheriff office's online inmate locator, warrant check portal, or sex offender registry before making an in-person trip — many common inquiries can be resolved without visiting the office in person.