Millennium Garages Reserve Parking Online – Chicago Illinois
Contact Customer Service between 8:00AM and 10:00PM at (312) 616-0600
The 86th Annual ACO Discounted Parking
Reserve your parking and save money for The 86th Annual ACO. This discount is available for advance purchases only.
When: Saturday, September 27, 2025
Where: Millennium Park Garage
5 South Columbus Drive,
Chicago, IL 60601
Access: Between Monroe and Randolph, enter the underground garage and follow signs to the ACO parking area. Use the elevator to reach upper Randolph and the Harris Theater.
Extended Stay Parking
Staying for multiple days? Reserve online below and save up to 50% on Extended Stay Parking for up to 5 days.
Your reservation also includes in-n-out access!
