Rock Hill is a hamlet in Sullivan County. At the 2010 census the population was 1,742.

Rock Hill is in the Town of Thompson  near  Route 17. its a sparsely populated hamlet just north of Wurtsboro featuring several lake communities making a summer destination for vacationers and snowbirds. Its scenic mountain roads make it a favorite for motorcyclists and autumnal leaf watchers. Its predominately rural with home prices affordable to the first time buyer.