1. In 1950, the biggest urban area was New York-Newark with 12,338,471 people. Cite in millions and round to single decimal, per AP style
2. In 2030, the predicted biggest urban area is Tokyo with 37,190,489 people. Cite in millions and round to single decimal, per AP style
3. Cancun, Mexico had the greatest rate of change of 16,894,000 percent between 1950 and 2015.
4. During 2010 to 2030, 48 cities are expected to decrease in population. Riga, Latvia is expected to lose the most at about 24 percent.
5. The United States area expected to have the largest percent increase in population from 2015 to 2030 is The Woodlands with a 66 percent increase. Detroit is expected to have the smallest percent increase with a 7 percent increase.

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