Lake County is located in northeastern Illinois and is the third most populous county in the state. It is part of the Chicago metropolitan area and is bordered by Cook County to the south, McHenry County to the north, and Wisconsin to the north and east. The county seat is Waukegan.

The county government is composed of a Board of Commissioners, which is the legislative branch, and an elected County Executive, which is the executive branch. The Board of Commissioners is composed of 21 members, each representing a district within the county. The County Executive is responsible for the day-to-day operations of the county government.

The county is divided into 30 townships, which provide local services such as road maintenance and fire protection. The county also operates a number of departments, including the Sheriff's Office, Health Department, and Public Works Department.

The county is home to a number of cities, villages, and towns, including Waukegan, North Chicago, Zion, Gurnee, Round Lake Beach, and Grayslake. The county also contains a number of unincorporated areas.

The county is served by two major interstate highways, I-94 and I-294, as well as a number of state highways. The county is also served by Metra, the commuter rail system, and Pace, the suburban bus system.

For the most up-to-date and in-depth information, please check the public records links below.