Lake County
Sheriff’s Office (LCSO)
Complete local guide to Lake County Sheriff’s Office in Illinois — inmate search, jail roster, warrant lookup, arrest records, phone numbers, address, visitation rules, and every service explained step by step for Waukegan, Zion, North Chicago, Gurnee, Mundelein, Vernon Hills, and all surrounding Lake County communities.
The Lake County Sheriff’s Office (LCSO) is the primary law enforcement agency for Lake County, Illinois. Serving Waukegan, Zion, North Chicago, Gurnee, Mundelein, Vernon Hills, and all surrounding communities, LCSO operates the county jail, provides patrol services, executes warrants, and delivers essential public safety resources to residents across one of Illinois’ largest and most diverse counties.
Whether you need to locate a loved one in custody, check for active warrants, request arrest records, schedule visitation, or simply find the right phone number and address, this complete guide gives you everything in clear, step-by-step instructions with direct official links, verified contact details, and practical local tips from the Lake County area.
What Is the Lake County Sheriff’s Office (LCSO)?
The Lake County Sheriff’s Office serves as the main law enforcement agency for Lake County, Illinois. It manages the county jail facilities, handles warrant execution, provides patrol services in unincorporated areas, and supports public safety for thousands of residents every week in one of the most populous counties in the state.
lakecountyil.gov/249/Sheriff is the only official source for inmate searches, warrant information, arrest records, and all LCSO services.
Lake County Sheriff’s Office Phone Number, Address & Locations
Service | Address | Phone Number | Use For |
|---|---|---|---|
Headquarters / Administration | 25 S Martin Luther King Jr Ave, Waukegan, IL 60085 | General inquiries and non-emergency | |
Jail Information / Inmate Locator | Lake County Jail | Inmate status, bond, and jail questions | |
Emergency | All Lake County | Life-threatening emergencies |
LCSO Headquarters — Map & Location
Lake County Sheriff’s Office Inmate Search — How to Find Anyone in Jail
Visit lakecountyil.gov/288/Inmate-Search — the official LCSO inmate search tool. It provides current custody status, charges, bond information, and facility details for anyone held in Lake County jail facilities.
How to Search the LCSO Inmate Database — Step by Step
- 1Go to the Official Portal
Open the inmate search page.
- 2Enter Search Criteria
Use last name or other available fields.
- 3Review the Results
Click any matching record to view charges, bond amount, mugshot (when available), and current facility.
- 4Take Next Action
Note important details and call (847) 377-4000 for additional assistance.
Lake County Warrant Search
Check for active warrants through official Lake County resources.
Contact LCSO at (847) 377-4000 for warrant status or visit the official website for any available wanted persons information.
Additional Official Resources & Local Tips for Lake County Residents
Useful links and practical advice for the Waukegan / Gurnee area:
- Non-Emergency Reporting: Call (847) 377-4000 for non-emergency incidents.
- Public Records Requests: Submit via official channels for arrest records and other documents.
- Visitation Information: Call (847) 377-4000 for current visitation rules and schedules. Valid photo ID is required.
Lake County sees increased activity during summer tourism and major events. Many residents in Zion, North Chicago, and Mundelein recommend using the online inmate search tool first before calling. Be prepared with the full name and date of birth when inquiring. Beware of common scams where callers impersonate LCSO and demand immediate payment — the Sheriff’s Office will never ask for payment over the phone for warrants or bonds. Business hours are best for detailed assistance.