Waltham Police Department

Waltham Police Department is the municipal law-enforcement agency for the City of Waltham in Middlesex County, Massachusetts, based at 155 Lexington St. The department serves residents, businesses, and visitors within Waltham limits in Middlesex 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. Waltham sits along Massachusetts 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 Waltham should be reported by dialing 911.

According to the U.S. Census Bureau (ACS 2023), Waltham city, MA has an estimated population of 64,723.