Vermont, constituent state of the United States of America. One of the six New England states lying in the northeastern corner of the country, it was admitted to the union on March 4, 1791, as the 14th state. It is sparsely populated, and its capital, Montpelier, is one of the least-populous U.S. state capitals. Vermont is bordered to the north by Quebec, Canada, to the east by New Hampshire, to the south by Massachusetts, and to the west by New York. From the Canadian to the Massachusetts border, the Connecticut River separates Vermont from New Hampshire. The river, from the ...(100 of 5148 words)