Main city: Phoenix
Timezone: (UTC-7)
Phone type: Landline
Operator: Qwest Corporation

Phoenix, the capital, and largest city, of the U.S. state of Arizona. With 1,445,632 people (as of the 2010 U.S. Census), Phoenix is the most populous state capital in the United States, as well as the sixth most populous city nationally, after (in order) New York, Los Angeles, Chicago, Houston, and Philadelphia. Residents of the city are known as Phoenicians. ^source

North American area code 623 is a state of Arizona telephone area code which was created in a split from area code 602 on April 1, 1999, when it was deemed that the Greater Phoenix metropolitan area could no longer continue with just one area code due to its explosive growth in the 1990s. The west side and the western half of the far north side became 623, while the eastern suburbs and the Phoenix neighborhood of Ahwatukee became area code 480. Generally, 623 is coextensive with the West Valley area. ^source