Contact
Corporate Office
Cotter Consulting, Inc.
100 South Wacker Drive
Suite 920
Chicago, IL 60606
Phone: 312.696.1200
Fax: 312.696.1222
information@cotterconsulting.com
Transportation Office
8150 South Cass Avenue
Darien, IL 60561
Phone: 630.724.9730
Fax: 630.310.5512