Lake County, Illinois in the context of "Presbytery of Chicago"

Interstate 94 (I-94) generally runs north–south through the northeastern portion of the US state of Illinois, in Lake and Cook counties. It is signed east–west in Illinois in accordance with its general alignment across the country, with west signage aligned with northbound travel and east signage aligned with southbound travel. I-94 in Illinois is 61.53 miles (99.02 km) long.

The William G. Edens Expressway (also known as the Edens Parkway and the Edens Superhighway) is the main major expressway north from the city of Chicago to Northbrook. Only the short portion from the spur ramp to the expressway's end in Highland Park does not carry I-94. It was the first expressway in Chicago and was opened on December 20, 1951. It has three lanes in each direction. The original name of the expressway was the Edens Parkway, named after William Grant Edens (1863–1957), a banker and early advocate for paved roads. He was a sponsor of Illinois's first highway bond issue in 1918.

Highland Park is a city in Lake County, Illinois, United States. A suburb of Chicago, it lies about 25 miles (40 km) north of Downtown Chicago. Per the 2020 census, the population was 30,176. Highland Park is located on the North Shore of the Chicago metropolitan area. According to the United States Census Bureau, the median household income in Highland Park exceeded an estimated $159,567 in 2022.

The Valparaiso Moraine is a recessional moraine (a landform left by receding glaciers) that forms an immense U around the southern Lake Michigan basin in North America. It is a band of hilly terrain composed of glacial till and sand. The Valparaiso Moraine defines part of the continental divide known as the Saint Lawrence River Divide, bounding the Great Lakes Basin. It begins near the border of Wisconsin and Illinois and extends south through Lake, McHenry, Cook, DuPage and Will counties in Illinois, and then turns southeast, going through northwestern Indiana. From this point, the moraine curves northeast through Lake, Porter, and LaPorte counties of Indiana into Michigan. It continues into Michigan as far as Montcalm County.

The moraine was formed during the Crown Point Phase of the Wisconsin glaciation. At this time the glacier covering the area had grown thin, so it was restrained by dolomite rock layers in the Lake Michigan basin. Where the glacier stopped, glacial till and sand was deposited, creating the hills of the moraine. After the Valparaiso Moraine was formed, the glacier retreated and formed the Tinley Moraine.

Waukegan (/wəˈkiːɡən/ wə-KEE-ghən) is a city in Lake County, Illinois, United States, and its county seat. Located 36 miles (58 km) north of Chicago, Waukegan is a satellite city within the greater Chicago metropolitan area.

As of the 2020 census, its population was 89,321, making it the most populous city in Lake County, the seventh-most populous city within the Chicago metropolitan area and the 10th-most populous city in Illinois. However, unlike nearby wealthy North Shore suburbs, Waukegan has long been classified by the Illinois state government as overall "socioeconomically distressed" despite having some middle class inhabitants.