The Cambridge Police Department is the municipal police department for the city of Cambridge, Massachusetts, in the United States. Formally organized in 1859. with the appointment of John C. Willey as the first Chief of Police, the Cambridge Police Department was then manned by only 16 officers. The Cambridge Police Department moved its headquarters location on December 8, 2008. The police department is now located in the Robert W. Healy Public Safety Facility at 125 Sixth Street in the neighborhood of East Cambridge, leaving their Central Square location after 135 years.