State Demographics: Arizona was admitted into the United States on Feb. 14,1912. The state Capital is Phoenix, the State flower is the saguaro's blossom and the state bird is the Cactus Wren. Arizona also known as The Grand Canyon State covers an area of 114006 sq. miles. The largest cities in Arizona are Phoenix, Tucson, Mesa, Glendale, Scottsdale, Chandler, Tempe, Gilbert, Peoria, Yuma and Flagstaff. The estimated Population in 2004 was 5,743,834 up 12% from 2000. The highest point in Arizona is Humphreys Peak which is 12,633 feet. If you are relocating to Arizona, please use our directory to help you find an advisor for your category of interest.