Phoenix Population 2024 Demographics By City. The median age was 34.1 years in 2021, with a median income of $34,427 that same year. The most populous cities in arizona are phoenix with 1,650,070, tucson at 547,239, mesa with 511,648, chandler at 280,167, and gilbert with 275,411.

Phoenix, a city within maricopa county, arizona, had a population of 1,644,409 in 2022. Phoenix is the biggest city in arizona, with a population of 1,662,607 in 2024.