| Chicago Police Department | |
|---|---|
Patch | |
Seal | |
Badge | |
| Common name | Chicago P.D. |
| Abbreviation | CPD |
| Motto | We Serve and Protect |
| Agency overview | |
| Formed | December 20, 1835 |
| Employees | 13,086 (2020) |
| Annual budget | $1.7 billion (2020) |
| Jurisdictional structure | |
| Operations jurisdiction | Chicago, Illinois, U.S. |
| Jurisdictional area | |
| Size | 237 sq mi (610 km2) |
| Population | 2,746,388 (2020) |
| Legal jurisdiction | As per operations jurisdiction |
| Governing body | Chicago City Council |
| General nature | |
| Operational structure | |
| Headquarters | 3510 S. Michigan Ave Chicago, Illinois, U.S. |
| Police officers | |
| Civilian employees | 948 (2020) |
| Mayor of Chicago responsible | |
| Agency executive | |
| Bureaus | 6
|
| Facilities | |
| Districts | 22
|
| Website | |
| chicagopolice | |
The Chicago Police Department, also known as the CPD, is the main law enforcement agency of the City of Chicago, Illinois, in the United States, under the jurisdiction of the city mayor. It is the second-largest municipal police department in the United States, behind the New York City Police Department. As of 2025, the CPD had 11,554 sworn officers on duty, and has 124 units.[clarification needed] Dating back to 1837, the Chicago Police Department is one of the oldest modern police forces in the world.