Rock Island Police Department

Rock Island Police Department is the municipal law-enforcement agency for the City of Rock Island in Rock Island County, Illinois, based at 316 16th St. The department serves residents, businesses, and visitors within Rock Island limits in Rock Island 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. Rock Island sits in a Illinois 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 Rock Island should be reported by dialing 911.

According to the U.S. Census Bureau (ACS 2023), Rock Island city, IL has an estimated population of 36,758.