Elgin is a city in Cook and Kane counties in the northern part of the U.S. state of Illinois. Located roughly 35 mi northwest of Chicago, it lies along the Fox River. As of 2013, the city had a total population of 110,145, making it the eighth-largest city in Illinois. Wikipedia

Naperville is a suburban city of Chicago, located in DuPage and Will counties in the State of Illinois. Naperville was voted the second-best place to live in the United States by Money magazine in 2006. It was rated 1st on the list of best cities for early retirement in 2013 by kiplinger. Wikipedia