<P> The Phoenix Metropolitan Area -- often referred to as the Valley of the Sun , the Salt River Valley or Metro Phoenix -- is a metropolitan area , centered on the city of Phoenix , that includes much of the central part of the U.S. State of Arizona . The United States Census Bureau 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 2015 population estimates , Metro Phoenix had 4,574,351 residents , making it the 12th largest Metropolitan Area in the nation by population . The gross domestic product of the Phoenix Metropolitan Area was $215 billion in 2014 , 15th largest amongst metro areas in the United States . </P>
<P> The Phoenix Metropolitan Area -- often referred to as the Valley of the Sun , the Salt River Valley or Metro Phoenix -- is a metropolitan area , centered on the city of Phoenix , that includes much of the central part of the U.S. State of Arizona . The United States Census Bureau 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 2015 population estimates , Metro Phoenix had 4,574,351 residents , making it the 12th largest Metropolitan Area in the nation by population . The gross domestic product of the Phoenix Metropolitan Area was $215 billion in 2014 , 15th largest amongst metro areas in the United States . </P>
what is the population of phoenix metro area
what is the population of phoenix metro area
4,574,351
4,574,351