Portsmouth Police Department

Portsmouth Police Department is the municipal law-enforcement agency for the City of Portsmouth in Rockingham County, New Hampshire, based at 3 Junkins Avenue. The department serves residents, businesses, and visitors within Portsmouth limits in Rockingham 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. Portsmouth sits across a New Hampshire jurisdiction where seasonal and year-round residents share the roads, and the police department is the primary local law-enforcement presence for day-to-day public safety inside the city. Public safety emergencies in Portsmouth should be reported by dialing 911.

According to the U.S. Census Bureau (ACS 2023), Portsmouth city, NH has an estimated population of 22,332.