Ulster County is a county in the U.S. state of New York. It is situated along the Hudson River. As of the 2020 census, the population was 181,851. The county seat is Kingston. The county is named after the Irish province of Ulster. The county is part of the Hudson Valley region of the state.
Country: United States
State: New York
Founded: November 1, 1683
Named for: Prince James, Duke of York and Albany and Earl of Ulster