Old Westbury, New York

Old Westbury, New York
Incorporated Village of Old Westbury
Old Westbury Village Hall, Police Station, and Post Office in 2021
Nickname: 
V.O.W.
Location in Nassau County and the state of New York
Old Westbury, New York
Location on Long Island
Old Westbury, New York
Location within the state of New York
Coordinates: 40°46′55″N 73°35′50″W / 40.78194°N 73.59722°W / 40.78194; -73.59722
Country United States
State New York
CountyNassau
TownsNorth Hempstead
Oyster Bay
Incorporated1924
Named afterWestbury, Wiltshire, England
Government
 • MayorMarina Chimerine
Area
 • Total
8.57 sq mi (22.20 km2)
 • Land8.57 sq mi (22.20 km2)
 • Water0 sq mi (0.00 km2)
Elevation
160 ft (50 m)
Population
 (2020)
 • Total
4,289
 • Density500.3/sq mi (193.18/km2)
Time zoneUTC−5 (Eastern (EST))
 • Summer (DST)UTC−4 (EDT)
ZIP Code
11568
Area codes516, 363
FIPS code36-54705
GNIS feature ID0959332
Websitewww.villageofoldwestbury.gov

Old Westbury is a village in the towns of North Hempstead and Oyster Bay in Nassau County, on the North Shore of Long Island, in New York, United States. The population was 4,289 at the time of the 2020 census.

The Incorporated Village of Old Westbury is one of the nation's wealthiest municipalities and is the second-richest zip code in the state of New York – topped only by Harrison in Westchester County. In 2007, Business Week dubbed Old Westbury as New York's most expensive suburb. Old Westbury Gardens – located within the village – has been recognized as one of the three best public gardens in the world by Four Seasons Hotels magazine.