Vergennes ( /vərdʒɛnz/) is a city located in the northwest quadrant of Addison County, Vermont, in the United States. Bordered by the towns of Ferrisburgh, Panton and Waltham, as of the 2000 census the city population was 2,741. It is the smallest of Vermont's nine cities in terms of population (though the city of Winooski covers a smaller area).
Vergennes, first settled in 1766 by Donald MacIntosh, was established in 1788, the only one of Vermont's cities not to have been first chartered as a town or independent village. Instead, portions of the pre-existing towns of New Haven, Panton and Ferrisburg where they intersected at the Otter Creek Falls were drawn off to create Vergennes. It is the smallest city (by population) in Vermont.
The city is named for Charles Gravier, Comte de Vergennes. Reluctant to openly do anything that might involve her in another war with England, France agreed to aid the colonists in their revolution behind the scenes, due mainly to the efforts of Benjamin Franklin. As directed by Louis XVI, Gravier established a dummy company through which the Americans received nearly 80% of their military supplies. It was also Gravier who negotiated the 1783 Treaty of Paris, which formally brought the Revolutionary War to a close.