Sheridan Road is a major north-south street that leads from Diversey Parkway in Chicago, Illinois, north to the Illinois-Wisconsin border and beyond to Racine. Throughout most of its run, it is the easternmost north-south through street, closest to Lake Michigan. From Chicago, it passes through Chicago's wealthy lakeside North Shore suburbs, and then Waukegan and Zion, until it reaches the Illinois-Wisconsin state line in Winthrop Harbor. In Wisconsin, the road leads north through Pleasant Prairie and Kenosha, until it ends on the south side of Racine, in Mount Pleasant.

Waukegan is the most populous city in and the county seat of Lake County, Illinois, United States. It is an industrial suburb about 36 miles (58 km) north of Chicago. As of the 2020 census, its population was 89,321, making it the seventh-most populous city within the Chicago metropolitan area and the 10th-most populous city in Illinois.