Westport is home to the Essex County Fairgrounds (National Register of Historic Places). It is situated on the shores of Lake Champlain's Northwest Bay at an elevation of about 200 feet. Lake Champlain is 120 miles long and 12 miles wide at its greatest width and extends north from Whitehall, New York to across the U.S. Canadian border to its outlet at the Richelieu River in Quebec. The hamlet, which was an incorporated village between 1907 and 1992, include several hundred residences, civic, ecclesiastical, and commercial buildings, which primarily date from the late 19th and early 20th centuries. Two major highways pass through Westport — NYS Route 9N, which runs between Saratoga Springs and Keeseville, and NYS Route 22, which extends from the Canadian border to just outside of New York City. In the Champlain Valley Route 22 is one of three major north-south routes through the region.