As of the 2010 United States Census, there were 1,339,532 people, 448,528 households, and 340,523 families residing in the county. The population of Nassau County was estimated by the U.S. Census to have increased by 2.2% to 1,369,514 in 2017, representing 6.9% of the Census-estimated New York State population of 19,849,399 and 17.4% of the Census-estimated Long Island population of 7,869,820. The population density in 2010 was 4,700 people per square mile (1,815/km²).  There were 468,346 housing units at an average density of 1,598 per square mile (617/km²).  The racial makeup of the county was 73.0% White (U.S. Census) (65.5% non-Hispanic White), 11.1% African American (U.S. Census), 0.2% Native American (U.S. Census), 7.6% Asian (U.S. Census) (3.0% Indian, 1.8% Chinese, 1.0% Korean, 0.7% Filipino, 0.1% Japanese, 0.1% Vietnamese, 0.9% Other Asian), 0.03% Pacific Islander (U.S. Census), 5.6% from Race (United States Census), and 2.4% from two or more races. Hispanic (U.S. Census) or Latino (U.S. Census) of any race were 14.6% of the population.. How many more Vietnamese than Pacific Islander live in Nassau County?