Gurnee Mills is a shopping mall and outlet mall in Gurnee, Illinois, a northern suburb of Chicago near Waukegan. It has of gross leasable area and ten major anchor stores in its Z-shaped single-story building, it is the third largest mall in Illinois, and the largest of the four enclosed shopping centers in Lake County. It is owned and operated by the Simon Property Group, it was an early part of the "Landmark Mills" chain of shopping malls built by the Mills Corporation.