The 2009 United States Open Championship was held in what county?
2009 U.S. Open (golf): The 2009 United States Open Championship was the 109th U.S. Open, held June 18–22 on the Black Course of Bethpage State Park on Long Island, in Farmingdale, New York. Farmingdale, New York: The Incorporated Village of Farmingdale is an incorporated village on Long Island within the Town of Oyster Bay in Nassau County, New York, in the United States.
Nassau