Police departments in Illinois operate independently at the municipal level, with each city or town maintaining its own department under local government authority. State-level law enforcement is handled separately by the Illinois State Police or Highway Patrol, which provides support to local agencies and covers unincorporated areas.

Police Department locations are available in 796 cities across Illinois. They are spread across 102 counties.

Cities with the highest concentration of police department locations include Chicago, Springfield, Moline, reflecting the larger municipal departments in major urban centers with multiple precincts or substations.

Residents of Illinois should save their local police department's non-emergency number for situations that require a police response but are not life-threatening emergencies, such as minor accidents, noise complaints, and suspicious activity reports.

Police Department by Counties

A
B
C
D
E
F
G
H
I
J
K
L
M
O
P
R
S
T
U
V
W

Police Department by Cities

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

Residents of Illinois should identify their local police department's non-emergency line, online report filing portal, and records request process before they need them. Many departments in Illinois offer fingerprinting services by appointment, and some provide online crime mapping tools to help residents stay informed about activity in their neighborhoods.

Browse Police Department by county across Illinois to find the nearest location.