Alburgh (formerly Alburg) is a town in Grand Isle County, Vermont, United States, founded in 1781 by Ira Allen.

[6] A two-league strip between Missisquoi Bay and the Chambly River (now the Richelieu River) north of the Alburgh tongue was granted by Lieutenant Governor of Quebec Charles de la Boische, Marquis de Beauharnois, and Intendant of New France Gilles Hocquart to Seigneur François Foucault on April 3, 1733 (ratified by the King of France April 6, 1734).

Foucault thence resubmitted his application to the land in March 1739 (requesting an extension of one league to the south), having established Missiskouy (Missiquoi) Village with six inhabitants.

On May 10, 1741, the seigneuries were deemed forfeited for lack of settlement; on May 1, 1743, Foucault's application was accepted (ratified by the King on March 25, 1745).

[citation needed] In 1763 at the end of the French and Indian War, New France was ceded to Great Britain.

In 1781 Allen was part of the commission that negotiated the Vermont–New York boundary, placing the Alburgh Tongue in Vermont.

However, there are bridges to Rouses Point, New York, (U.S. Route 2) and Swanton, Vermont, as well as to North Hero island to the southeast.

This makes Alburgh not practically an exclave, unlike the other locations not connected to the United States by land.