Phoenix, Arizona is the most populous city in Arizona with almost 2 million residents.
Phoenix ( [ ˈfiːnᵻks ] ) is the capital and most populous city of the U.S. state of Arizona . With 1,615,017 people , Phoenix is the fifth most populous city nationwide , the most populous state capital in the United States , and the only state capital with a population of more than one million residents . The metropolitan area is the 12th largest by population in the United States , with approximately 4.3 million people .