Massapequa Park is a village and hamlet located within the town of Oyster Bay in Nassau County, New York, United States. Areas south and east of the village borders are considered the hamlet of Massapequa Park because they are under the jurisdiction of the Town of Oyster Bay rather than the village. The hamlet shares the same zip code, fire department and school district as the village. The population was 17,008 at the 2010 census.