What is the population of Arizona? The U.S. Census Bureau
provides population statistics. The actual census only takes
place every ten years, in dates ending in a zero. In between,
they often provide updated estimates. The 2008 estimate for the
population of Arizona was 6,500,180. Population of Arizona, 2010
AZ Population Growth since 2000 census: 24.6% Arizona ranks 16th
in state population in the United States. It was 14th at the
2008 estimate, and 20th at the 2000 census.