Plattekill is a town in Ulster County, New York, United States. The population was 10,424 in 2020, a slight decrease from 10,499 at the 2010 census. The name is derived from a stream, the Platte Kill. The town of Plattekill is in the southeastern part of the county, immediately north of the town of Newburgh in neighboring Orange County. The five official hamlets in the town are Ardonia, Clintondale, Modena, New Hurley, and Plattekill. History The area was settled by whites early in the 18th century, and the town was established in 1800 from part of the town of Marlborough. The Reformed Dutch Church of New Hurley was built in the 1830s, and listed on the National Register of Historic Places in 1982. The Shuart-Van Orden Stone House was built in 1740 and listed on the National Register of Historic Places in 1995. Geography According to the United States Census Bureau, the town has a total area of 35.7 square miles (92.5 km), of which 35.6 square miles (92.2 km) is land and 0.1 square mile (0.2 km) (0.22%) is water. The southern town line is the border of Orange County, dividing Plattekill from Newburgh. To the west, Plattekill borders Shawangunk and Gardiner, while in the north the town is bordered by Lloyd. The eastern boundary of the town closely parallels the Marlboro Mountain ridge, dividing Plattekill from the town of Marlborough. The New York State Thruway (Interstate 87), US 44 (concurrent with NY 55) and NY 32 pass through the town. Demographics As of the census of 2000, there were 9,892 people, 3,649 households, and 2,561 families living in the town. The population density was 277.8 people per square mile (107.3/km). There were 3,888 housing units at an average density of 109.2 per square mile (42.2/km). The racial makeup of the town was 86.91% white, 4.62% black or African American, .31% Native American, .63% Asian, .03% Pacific Islander, 5.06% from other races, and 2.44% from two or more races. Hispanic or Latino of any race were 16% of the population. There were 3,649 households, out of which 35.6% had children under the age of 18 living with them, 53.6% were married couples living together, 11.6% had a female householder with no husband present, and 29.8% were non-families. 23.7% of all households were made up of individuals, and 8% had someone living alone who was 65 years of age or