At the 2010 U.S. census, there were 1,585,873 people living in Manhattan, an increase of 3.2% since 2000. Since 2010, Manhattan's population was estimated by the U.S. Census Bureau to have increased 2.7% to 1,628,706 , representing 19.5% of New York City's population of 8,336,817 and 8.4% of New York State's population of 19,745,289. As of the 2017 census estimates, the population density of New York County was around 72,918 people per square mile (28,154/km²), the highest population density of any county in the United States. In 1910, at the height of European immigration to New York, Manhattan's population density reached a peak of 101,548 people per square mile (39,208/km²).