Saddle Rock is a village on the Great Neck Peninsula in the Town of North Hempstead, in Nassau County, on the North Shore of Long Island, in New York, United States. The population was 830 at …Saddle Rock is a village on the Great Neck Peninsula in the Town of North Hempstead, in Nassau County, on the North Shore of Long Island, in New York, United States. The population was 830 at the 2010 census.