U.S. Route 11 (US 11) is a part of the United States Numbered Highway System that runs from New Orleans, Louisiana, to the Canada–United States border at Rouses Point, New York. In the state of New York, US 11 extends for 318.66 miles (512.83 km) from the Pennsylvania state line south of the Southern Tier city of Binghamton to the Canada–United States border at the North Country village of Rouses Point, where it becomes Route 223 upon entering Quebec. The portion of US 11 south of Watertown follows a mostly north–south alignment and is paralleled by Interstate 81 (I-81) while the part of the route north of Watertown follows a more east–west routing, parallel to but not directly on the St. Lawrence River.

Rouses Point is a village in Clinton County, New York, United States, along the 45th parallel. The population was 2,209 at the 2010 census. The village is named after Jacques Rouse, a French Canadian soldier who fought alongside the Americans during their war for independence. The village is on the western shore of Lake Champlain at the source of the Richelieu River. Also located in the northeastern corner of the town of Champlain, it is north of the city of Plattsburgh and is on the Canada–United States border.