White Plains is a city

City

A city is a relatively large and permanent settlement. Although there is no agreement on how a city is distinguished from a town within general English language meanings, many cities have a particular administrative, legal, or historical status based on local law.For example, in the U.S...

 and the county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

 of Westchester County, New York

Westchester County, New York

Westchester County is a county located in the U.S. state of New York. Westchester covers an area of and has a population of 949,113 according to the 2010 Census, residing in 45 municipalities...

, United States. It is located in south-central Westchester, about 4 miles (6 km) east of the Hudson River

Hudson River

The Hudson is a river that flows from north to south through eastern New York. The highest official source is at Lake Tear of the Clouds, on the slopes of Mount Marcy in the Adirondack Mountains. The river itself officially begins in Henderson Lake in Newcomb, New York...

 and 2.5 miles (4 km) northwest of Long Island Sound

Long Island Sound

Long Island Sound is an estuary of the Atlantic Ocean, located in the United States between Connecticut to the north and Long Island, New York to the south. The mouth of the Connecticut River at Old Saybrook, Connecticut, empties into the sound. On its western end the sound is bounded by the Bronx...

. It is bordered to the north by the town of North Castle

North Castle, New York

North Castle is a town in Westchester County, New York, United States. The population was 11,841 at the 2010 census. It has no villages.-Geography:...

, to the north and east by the town/village of Harrison

Harrison, New York

Harrison is a village and town in Westchester County, New York, United States, located approximately northeast of Manhattan. The population was 27,472 at the 2010 census.-Establishment:...

, to the south by the town/village of Scarsdale

Scarsdale, New York

Scarsdale is a coterminous town and village in Westchester County, New York, United States, in the northern suburbs of New York City. The Town of Scarsdale is coextensive with the Village of Scarsdale, but the community has opted to operate solely with a village government, one of several villages...

 and to the west by the town of Greenburgh

Greenburgh, New York

Greenburgh is a town in the western part of Westchester County, New York, United States. The population was 88,400 at the 2010 census. Paul J. Feiner has been the Town Supervisor since 1991.-History:...

.

As of the 2010 U.S. census, the city had a total population of 56,853.