Best SEO and internet marketing services in Sullivan County NY. Sullivan County zip codes - 12701, 12719, 12720, 12722, 12723, 12724, 12726, 12727, 12732, 12733, 12734, 12736, 12737, 12738, 12741, 12742, 12743, 12745, 12747, 12748, 12749, 12750, 12751, 12752, 12754, 12759, 12762, 12763, 12764, 12765, 12766, 12767, 12768, 12769, 12770, 12775, 12777, 12778, 12779, 12781, 12783, 12784, 12785, 12786, 12787, 12789, 12790, 12791, 12792 Sullivan County is a county in the U.S. state of New York. The county was separated from Ulster County in 1809. There were more than 77 thousand people according to the census in 2010. It is named after major general John Sullivan (he is famous after the American Revolutionary War). The county is popular for numerous hotels and resorts built in the last century. Sullivan County has got the area of 997 square miles (2,580 km2). Water takes only 2.9% of the territory. The highest point is a 950 m (3,118 foot) peak there, known as Beech Mountain. The lowest point is along the Delaware River. Thirty-six town and village courts are there in the County. Since the 19th century Sullivan County is very popular for tourists. There you can do mountain climbing, boating, riding a bike and doing lots of outdoor sports as well as playing golf. The Monticello Raceway is a popular place in the USA. The Woodstock festival was a popular event in the county, which gathered lots of tourists. White and black Afro Americans, Native Americans, Asians, Pacific Islanders, Germans, Irish and Italians live there. Most of the residents speak English as their native language, but 7% of the population speak Spanish.