707 E. Etna Road
Ottawa, IL 61350
Phone: (815) 433-2161
In case of emergency, call 911
For full information regarding the LaSalle County Sheriff, please click here.
The Sheriff is the chief law enforcement officer in LaSalle County, an area of 1,148 square miles with a population of over 113,000. The Sheriff directly serves the unincorporated areas of the county and offers many countywide services and initiatives.