Illinois Regional Archives Depository (IRAD) System Illinois State Archives

Lake County

Lake County Courthouse Contact Information
Lake County Courthouse
18 N. County St.
Waukegan, IL 60085
847-377-2400 – County Clerk
847-377-3380 – Circuit Clerk
847-377-2575 – Recorder

IRAD Depository
Founders Memorial Library
Rm. 245B
Northern Illinois University
DeKalb, IL 60115


Origin of the name of the county

Present area, or parts of it, formerly included in

County Seats

History of county governing board

Township Government

Township Names

Township Map

Lake County Township Map

Pertinent Databases