Chicago is the third most populous city in the United States, after New York City and Los Angeles. With 2.7 million residents, it is the most populous city in both the U.S. state of Illinois and the American Midwest. Wikipedia

Knoxville is a city in the U.S. state of Tennessee, and the county seat of Knox County. The city had a population of 178,874 as of the 2010 census and an estimated population of 183,270 in 2013, making it the state's third largest city. Wikipedia