St Ann Police Department

St Ann Police Department is the municipal law-enforcement agency for the City of St. Ann in St. Louis County, Missouri, based at 10405 St. Charles Rock Road St. The department serves residents, businesses, and visitors within St. Ann limits in St. Louis 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. St. Ann sits along Missouri travel and commerce routes that bring daily traffic through the area, and the police department is the primary local law-enforcement presence for day-to-day public safety inside the city. Public safety emergencies in St. Ann should be reported by dialing 911.

According to the U.S. Census Bureau (ACS 2023), St. Ann city, MO has an estimated population of 12,865.