High Quality Content by WIKIPEDIA articles! The Twenty-third United States Census, known as Census 2010, is the current national census of the United States. National Census Day was April 1, 2010 and is the reference date used in enumerating (counting) individuals. Directors of the 2010 Census made an emphasis on getting an accurate count, an emphasis that included the hiring of 635,000 temporary enumerators. The population of the United States was counted as 308,745,538, a 9.7% increase from the 2000 Census.