Rock Hill is a hamlet in Sullivan County, New York, United States. At the 2020 census the population was 2,369. Rock Hill is in the town of Thompson by New York State Route 17. The hamlet of Rock Hill was not named so until October 1885, after the Katrina Falls Road post office was erected on top of a high, rocky cliff. Rock Hill was formally part of Briā¦
Rock Hill is a hamlet in Sullivan County, New York, United States. At the 2020 census the population was 2,369. Rock Hill is in the town of Thompson by New York State Route 17. The hamlet of Rock Hill was not named so until October 1885, after the Katrina Falls Road post office was erected on top of a high, rocky cliff. Rock Hill was formally part of Bridgeville.