text: what is arizona's number in the 50 states and what is the ranking size in place?   5,939,292 residents at the last census ranked 20th in a list of population by state 17.43 people per km (ranked 36th out of 50) a total area of 113,998 sq mi (ranked 6th out of 50) became a state on february 14, 1912 (48th state out of 50)