With my 50 State 50 Days travel partner Haley at Hoover Dam. My first Welcome to Arizona sign photo was in 1989 near the four corners monument. Page 1 - Page 2 - Page 3 Flag Seal * Website : az.gov Capital : Phoenix Highest point : Humphreys Peak, 12,633 feet Area : 114,006 square miles, 6th largest state Population : 5,130,632 (2000 US census) Motto : Ditat Deus (God enriches) Admitted to Union : February 14, 1912 State Song : "Arizona March Song" State Bird : Cactus Wren State Flower : Saguaro cactus bloom State Tree : Paloverde