Stone Ridge is a hamlet (and census-designated place) in Ulster County, New York, United States.

Stone Ridge is located in the Town of Marbletown, along US 209 where it overlaps NY 213.

As of the census[5] of 2000, there were 1,173 people, 458 households, and 327 families residing in the CDP.

Of all households 25.1% were made up of individuals, and 9.6% had someone living alone who was 65 years of age or older.

The CDP is in Rondout Valley Central School District.