Arizona is a state of the United States of America located in the southwestern region of the United States. The capital and largest city is Phoenix. The second largest city is Tucson, followed in size by the eight Phoenix metropolitan area cities of Mesa, Glendale, Chandler, Scottsdale, Gilbert, Tempe, Peoria, Surprise and then by Yuma in Yuma County.

Arizona is the 48th state and last of the contiguous states admitted to the Union, achieving statehood on February 14, 1912 - the 50th anniversary of Arizona's recognition as a territory of the United States.

Arizona is noted for its desert climate, exceptionally hot summers, and mild winters, however it also features pine forests and mountain ranges in the northern high country, with cooler weather than in the lower deserts.Arizona is one of the Four Corners states.