City of Phoenix Census, Growth and Development
Phoenix is Officially America's Fatest Growing City.
Arizona's desert capital grew at the fastest rate amoung America's largest cities, vaulting ahead of Philadelphia to officially becoming the fifth-largest city in the United States. Phoenix's population grew from 1.4 million people in 2010 to 1.6 million in 2020 a rate of 11.2 percent, according to the Census Bureau.