Niles is a village in Cook County, Illinois, United States, located in the townships of Maine and Niles, directly neighboring Chicago's far northwest border. Per the 2020 census, the population was 30,912. The current mayor of Niles is George Alpogianis.

Skokie is a village in Cook County, Illinois, United States. According to the 2020 census, its population was 67,824. Skokie lies approximately 15 miles (24 km) north of Chicago's downtown Loop. The name Skokie comes from a Potawatomi word for "marsh". For many years, Skokie promoted itself as "The World's Largest Village". Skokie's streets, like that of many suburbs, are largely a continuation of the Chicago street grid, and the village is served by the Chicago Transit Authority, further cementing its connection to the city.