High Falls is a hamlet (and census-designated place) in Ulster County, New York, United States. The population was 627 at the 2010 census.
High Falls is located at 41°49′37″N 74°7′20″W / 41.82694°N 74.12222°W / 41.82694; -74.12222 (41.826892, -74.122151).
According to the United States Census Bureau, the CDP has a total area of 1.2 square miles (3.1 km), all land.
In addition to Marbletown and Rosendale, a small portion of High Falls falls within the town of Rochester.
As of the census of 2000, there were 627 people, 271 households, and 169 families residing in the CDP. The population density was 524.4 per square mile (201.7/km²). There were 301 housing units at an average density of 251.7/sq mi (96.8/km²). The racial makeup of the CDP was 94.90% White, 2.71% African American, 0.32% Asian, 0.96% from other races, and 1.12% from two or more races. Hispanic or Latino of any race were 3.83% of the population.
There were 271 households out of which 26.6% had children under the age of 18 living with them, 48.3% were married couples living together, 10.7% had a female householder with no husband present, and 37.3% were non-families. 33.6% of all households were made up of individuals and 10.7% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.98.
In the CDP, the population was spread out with 22.5% under the age of 18, 5.9% from 18 to 24, 27.1% from 25 to 44, 30.9% from 45 to 64, and 13.6% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 90.0 males. For every 100 females age 18 and over, there were 84.8 males.
The median income for a household in the CDP was $35,735, and the median income for a family was $52,895. Males had a median income of $31,339 versus $27,500 for females. The per capita income for the CDP was $18,781. About 12.1% of families and 8.4% of the population were below the poverty line, including 11.0% of those under age 18 and 7.7% of those age 65 or over.