In 1946, the City of Galt was incorporated and organized its own police department. The first officers were Constables. Rollo Brewster was appointed Galt's first Constable. The first police chiefs doubled as full-time staff and augmented staffing needs by hiring part-time officers. The force eventually grew to six officers in 1973, eight officers in 1978, ten officers in 1982, and twenty-two officers in 2001. Today there are about 40 full time police officers working at the Galt Police Department.

The location of the department has moved as the town has grown. One of the oldest locations, which no longer stands today, was known as the Lee Township Justice Court Office, which actually house small jail, on 5th and “B” Street across from the CSD Fire Station #45. 

For a short time, the Police Department was located at 807 "C" Street. This location included city offices along with a library. The police occupied one small office with only 150 square feet. Prisoners were temporarily handcuffed to three steel rings on the wall in a small conference room before being transferred to county jail.

In July 1978, the new City Hall was completed and all city offices along with the county operated library moved to 380 Civic Drive. With a total of eight police officers, the new accommodations for the police seemed so large it would last for years to come. However, as the department grew, the police department exceeded the capacity of the existing facility.

In the spring of 2001, the City began construction on a new police facility located at 455 Industrial Drive. The main building of this facility is 22,000 square feet with a 3,000 square foot service building. The new Police Facility was completed in May, 2003.