Cook County Government

Cook County Government is an administrative facility in Downtown Chicago that provides services and performs administrative functions for a region in northeastern Illinois. The facility houses various departments managing a wide range of functions from health services to social programs.

The administration was established in 1831 and evolved from serving a few hundred residents into one of the largest administrative structures in the United States. Over nearly two centuries, it adapted to the growing population and increasingly complex needs of the region.

This administration serves as the central place where decisions are made that affect daily life in Chicago and surrounding municipalities. Visitors can observe how different departments work together to provide services for a diverse region.

Visitors can use the website to find information about services and participate in public discussions. Board meetings are available online, allowing people to engage with local administration from anywhere.

The administration reached its greenhouse gas reduction targets seven years ahead of schedule through systematic environmental management practices. This shows how public institutions can lead in implementing climate measures.

Location: Cook County

Inception: January 1, 1831

Address: 118 N Clark St, Chicago, IL 60602

Website: https://cookcountyil.gov/service-groups

GPS coordinates: 41.88392,-87.63148

Latest update: December 11, 2025 11:02