Galveston is a city in and seat of Galveston County located on Galveston Island on the Gulf Coast in the U.S. state of Texas within the Houston–Sugar Land–Baytown metropolitan area. As of the 2005 U.S. Census estimate, the city had a total population of 57,466. Galveston is accessible by the Galveston Causeway linking Galveston Island to the mainland on the north end of the city, a toll bridge on the western end of the island, and by ferry boat service on the east end of the city. Galveston is the second-largest city in Galveston County in population after League City.