On March 24th, 2016 the U.S. Census Bureau released the County total population estimates for July 1, 2015. The change in population is split in change due to natural increase and due to net-migration. Natural increase is the difference between the number of births and the number of deaths, net-migration the result of people moving in and out of a region.
Six economic regions gained population since April 1, 2010, New York City the most in number (375,443) and in percentage (4.6%). Four economic regions lost population since the latest Decennial Census; the Southern Tier lost the most in number (-9,228) and the Mohawk Valley most in percentage (-1.8%).
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