According to the United States Census Bureau, the village has a total area of 1.3 sq mi (3.4 km2), all land.

[6] Westminster, located in the southeastern part of Vermont, was the first town to be chartered, in 1736 by the Province of Massachusetts Bay.

The layout of the village center took place in 1736–1737, and initially called for an unusually broad Main Street (now US 5).

The town hall, for example, is built on the foundation of the 18th century colonial meeting house, retaining its exterior dimensions.

Two men were fatally wounded in the Westminster massacre on March 13, 1775, in a dispute between supporters of the New York claim (led by the local New York-appointed sheriff), and a group of anti-New Yorkers occupying the courthouse.

This event was significant in leading to the eventual declaration of the Vermont Republic in 1777, and its admission to the Union as a separate state in 1793.