Alburgh (formerly Alburg) is a town in Grand Isle County, Vermont, United States, founded in 1781 by Ira Allen. The population was 1,952 at the 2000 census. Alburgh is on the Alburgh Tongue, a peninsula extending from Canada into Lake Champlain, and lies on the only road-based route across Lake Champlain to New York state north of Addison, Vermont.