Windsor is a town in Windsor County, Vermont, United States. The population was 3,756 at the 2000 census.
One of the New Hampshire grants, Windsor was chartered as a town on July 6, 1761 by Colonial Governor Benning Wentworth. It was first settled in August 1764 by Captain Steele Smith and his family from Farmington, Connecticut. In 1777, the signers of the Constitution of the Vermont Republic met at Old Constitution House, a tavern at the time, to declare independence from the British Empire (the Vermont Republic would not become a state until 1791). In 1820, it was the state's largest town, a thriving center for trade and agriculture. In 1835, the first dam was built across Mill Brook to provide water power. Factories made guns, machinery, tinware, furniture and harness.
In 1846, Robbins and Lawerence received a government contract to manufacture firearms. Using advanced machine tools to produce interchangeable parts, they and their associates established factories in the Connecticut River valley and throughout New England. Two factories, now both closed, sustained the economy of Windsor: Cone Automatic Machine Company and a Goodyear Tire and Rubber Company plant.