Poquoson , informally known as Bull Island, is an independent city in the Commonwealth of Virginia. As of the 2010 census, the population was 12,150. The Bureau of Economic Analysis combines the city of Poquoson with surrounding York County for statistical purposes. Poquoson is located on the Virginia Peninsula, in the Hampton Roads metropolitan area. Poquoson is one of the oldest continuously named cities in Virginia. It is also one of the few to retain a name which derived from the Native Americans who inhabited the area before colonization by the English began in the 17th century.