Hannibal Police Department

Hannibal Police Department is the municipal law-enforcement agency for the City of Hannibal in Marion County, Missouri. The department serves residents, businesses, and visitors within Hannibal limits in Marion County. Its area of responsibility covers patrol and response to calls for service, traffic enforcement, criminal investigations inside the city, and community policing programs that support local neighborhoods and commercial corridors. Hannibal sits in a Missouri community corridor linking residential and commercial areas, and the police department is the primary local law-enforcement presence for day-to-day public safety inside the city. Public safety emergencies in Hannibal should be reported by dialing 911.

According to the U.S. Census Bureau (ACS 2023), Hannibal city, MO has an estimated population of 16,825.