New Castle is a town located in Westchester County, New York, United States. It is situated about 30 miles north of New York City and has a population of around 18,000 people. New Castle is known for its beautiful natural scenery, with several parks and nature preserves located within its borders, including the Gedney Park and the Whippoorwill Park. The town is also home to several historic landmarks, such as the Horace Greeley House, which was once the home of the famous journalist and political activist. New Castle is primarily a residential community, with a mix of single-family homes, townhouses, and apartments.