The Phoenix Metropolitan Area – also the Valley of the Sun, the Salt River Valley, or Phoenix Metro (known by most locals simply as “the Valley”) – is the largest metropolitan area in the Southwestern United States, centered on the city of Phoenix, that includes much of the central part of Arizona. The United States Office of Management and Budget designates the area as the Phoenix-Mesa-Scottsdale Metropolitan Statistical Area (MSA), defining it as Maricopa and Pinal counties. As of the Census Bureau's 2017 population estimates, Metro Phoenix had 4,737,270 residents, making it the 10th largest metropolitan area in the nation by population. The gross domestic product of the Phoenix Metropolitan Area was $242 billion in 2017, 16th largest amongst metro areas in the United States.
It is also one of the fastest-growing major metropolitan areas, gaining nearly 800,000 residents from 2010 to 2018, and nearly 1.6 mil…Read more on Wikipedia