Blauvelt is a hamlet, about 20 miles northwest of New York City. It is a census-designated place, formerly known as Greenbush and then Blauveltville, in Orangetown, Rockland County, New York, United States. It is located north of Tappan, east of Nauraushaun and Pearl River, south of Central Nyack, and west of Orangeburg. As of the 2010 census, the CDP had a population of 5,689.