What was the 2016 population of the city where Ariana Grande's "The Dangerous Woman Tour" began?
Dangerous Woman Tour:  The tour began on February 3, 2017, in Phoenix, Arizona, and, after stops in North America, Europe, Latin America, Asia and Oceania, it ended on September 21, 2017, in Hong Kong. Phoenix, Arizona:  With 1,615,017 people (as of 2016 ), Phoenix is the fifth most populous city nationwide, the most populous state capital in the United States, and the only state capital with a population of more than one million residents.
1,615,017