Contact: Ruth Allen
The PTPI Greater Phoenix, Arizona Chapter is located in an area which is comprised of Maricopa County and 18 cities and towns throughout Greater Phoenix. Our chapter is proud to have members from cities from all around Arizona.
Phoenix is the anchor of the Phoenix metropolitan area, also known as the Valley of the Sun, which in turn is part of the Salt River Valley. The metropolitan area is the 11th-largest by population in the United States, with approximately 4.85 million people as of 2020, making it the largest in the Southwestern United States. Phoenix, the seat of Maricopa County, has the largest area of all cities in Arizona, with an area of 517.9 square miles (1,341 km2), and is also the 11th largest city by area in the United States. It is the largest metropolitan area, both by population and size, of the Arizona Sun Corridor megaregion.