The 2016 Flagstaff, Arizona, population is 70,320. There are 1,092 people per square mile (population density).
The median age is 25.9. The US median is 37.4. 35.12% of people in Flagstaff, Arizona, are married. 9.31% are divorced.
The average household size is 2.54 people. 29.02% of people are married, with children. 22.92% have children, but are single.
63.13% of people are white, 2.03% are black, 2.48% are asian, 10.43% are native american, and 0.14% claim 'Other'.
18.85% of the people in Flagstaff, Arizona, claim hispanic ethnicity (meaning 81.15% are non-hispanic).