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

Phoenix is the capital, and largest city, of the State of Arizona. With 1,445,632 people, Phoenix is the most populous state capital in the United States, as well as the sixth most populous city nationally, after New York, Los Angeles, Chicago, Houston, and Philadelphia. Wikipedia