Sierra Vista-Douglas, AZ Metro Area has a population of 129,647 people with a median age of 40 and a median household income of $45,075. Between 2014 and 2015 the population of Sierra Vista-Douglas, AZ Metro Area declined from 130,807 to 129,647, a -0.89% decrease and its median household income declined from $45,974 to $45,075, a -1.96% decrease.