The dispatcher's voice was that of Shaaron Claridge, a real Los Angeles dispatcher. Jack Webb thought using a real dispatcher for the voice-overs would lend authenticity to the program.

In keeping with the reputation of Jack Webb's series being scrupulously accurate about police procedures, selected episodes of this series were used in police academies as instructional films.

The paramedics from Emergency! (1972) sometimes crossed paths with the cops at Rampart Hospital.

Martin Milner's daughter, Amy, made a guest appearance playing the daughter of a shopkeeper shot during a robbery. Look for her as Debbie McMahon in Victim of the Crime (1975).

The LAPD station building where the show was based was the Rampart Division, northwest of downtown Los Angeles.