Question: when did arizona become a state in the us
Answer: ) Density 57 / sq mi ( 22 / km ) Ranked 33rd Median household income $52,248 ( 33rd ) Elevation Highest point Humphreys Peak 12,637 ft ( 3852 m ) Mean 4,100 ft ( 1250 m ) Lowest point Colorado River at the Sonora border 72 ft ( 22 m ) Before statehood Arizona Territory Admission to Union February 14 , 1912 ( 48th ) Governor Doug Ducey ( R ) Secretary of State Michele Reagan ( R ) Legislature Arizona Legislature Upper house Senate Lower house House of Representatives U.