The City of White Plains is the county seat of Westchester County, New York, United States. It is located in south-central Westchester, about 4 miles (6 km) east of the Hudson River and 2.5 miles (4.0 km) northwest of Long Island Sound. It is bordered to the north by the town of North Castle, to the north and east by the town/village of Harrison, to the south by the town/village of Scarsdale and to the west by the town of Greenburgh. As of the 2000 U.S. census, the city had a total population of 53,077, while a 2006 census estimate put the city's population at 57,081. White Plains is one of the edge cities that have developed outside of New York City. According to the city government, the daytime weekday population is estimated at 250,000.