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Population in Arizona and Three Most Populous Counties, 2010

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Visualization Notes:

Of Arizona’s nearly 6.4 million residents on April 1, 2010, approximately 60 percent—more than 3.8 million—lived in Maricopa County, in which most of the Phoenix metropolitan area is located. Another 6 percent of the state’s residents lived in Pinal County, which also is part of the Phoenix metro area. Pima County (the Tucson metro area) had nearly 1 million residents (15 percent of the state total).