Cook County is a county in the U.S. state of Illinois, with its county seat in Chicago, and is the setting for most of the events of The Good Wife. It is the second most populous county in the United States after Los Angeles County. Mainly urban and with a population of 5 million, Cook County is home to 40% of Illinois's population. Chicago is its largest city and makes up approximately 54% of the county's population. Cook County is heavily Democratic.
Cook County State's Attorney
Cook County court
All of the State's Attorney's cases and most of Lockhart/Gardner's case are heard in the Circuit Court of Cook County.