According to the 2014 United States Census, there are 401 cities and towns in Arizona. The locales range in size from Aztec, with a population of 3, to Phoenix, with a population of 1,513,367. The approximate total population of Arizona in all cities combined is 6,731,484.
Phoenix is Arizona's capital city, and it is also the sixth most populous city in the United States, as of April 2015. A total of 91 cities and towns in Arizona are incorporated. According to Arizona state law, a town must have a population of at least 3,000 and meet other guidelines to officially incorporate.
After Phoenix, the most populated cities in Arizona are Tucson, Mesa, Chandler, Glendale and Gilbert. In addition to Aztec, the smallest towns or census-designated places are Sunwest; Tonopah, Bear Flat, and Rock House; Haigler Creek; Flowing Springs; and Wahak Hotrontk. Each of these areas has a population of under 20 residents.
Tucson, which was incorporated in 1877, is the oldest city in Arizona. Tusayan, incorporated in 2010, is Arizona's newest incorporated town.
The state of Arizona has a population density of 57.49 people per square mile, and residents take advantage of a dry, desert climate and abundant sunshine throughout the year.