Greenfield Park is a hamlet in Ulster County, New York, United States. The community is located along New York State Route 52, 4.7 miles (7.6 km) west of Ellenville. Greenfield Park has a post office with ZIP code 12435, which opened on December 23, 1852.[2][3]
It is home to many bungalow colonies which are summer homes for mostly Jewish families who escape the summer heat in Brooklyn including tamarack hills, greenfield meadows, Dee lees.