Phoenix Metro Population 2020. The metro area population of phoenix in 2021 was 4,584,000, a 1.62% increase from 2020. The area added about 66,850 people in 2021 and another 72,850 in 2022, some of the largest gains of any metro in the country.

The metro area population of phoenix in 2021 was 4,584,000, a 1.62% increase from 2020. Phoenix’s population grew from 1.4 million people in 2010 to 1.6 million in 2020 a rate of 11.2 percent, according to the census bureau.