Phoenix, Arizona is the sixth largest city in the United States by population, Phoenix is the center for financial, commercial, cultural, entertainment and government activities in the State of Arizona. Phoenix is Arizona’s capital and the county seat of Maricopa County with more than 515 square miles. It offers more than 300 sun filled days a year, and an average temperature of 74.2 degrees Fahrenheit. Phoenix’s explosive growth began during World War II when military airfields were built in Maricopa County and many defense industries followed. The name Phoenix, legendary Egyptian symbol of rebirth, was chosen because the city was built on the ruins of the Hohokam Indian civilization.