Vermont is the 6th smallest in area and the 2nd least populous of the 50 United States. It is the only New England state not bordering the Atlantic Ocean. Lake Champlain forms half of Vermont's western border, which it shares with the state of New York. The Green Mountains are within the state. Vermont is bordered by Massachusetts to the south, New Hampshire to the east across the Connecticut River, New York to the west, and the Canadian province of Quebec to the north.

Originally inhabited by two major Native American tribes (the Algonquian-speaking Abenaki and the Iroquois), much of the territory that is now Vermont was claimed by France during its early colonial period. France ceded the territory to the Kingdom of Great Britain after being defeated in 1763 in the Seven Years' War (in the United States, referred to as the French and Indian War). For many years, the nearby colonies, especially New Hampshire and New York, disputed control of the area (then called the New Hampshire Grants).