Dukes County, New York was a county of the New York

Province of New York

The Province of New York was an English and later British crown territory that originally included all of the present U.S. states of New York, New Jersey, Delaware and Vermont, along with inland portions of Connecticut, Massachusetts, and Maine, as well as eastern Pennsylvania...

 from 1683 to 1691. It was formed on November 1, 1683, at the same time as Kings County, Queens County, and Duchess County

Dutchess County, New York

Dutchess County is a county located in the U.S. state of New York, in the state's Mid-Hudson Region of the Hudson Valley. The 2010 census lists the population as 297,488...

. It consisted of the Elizabeth Islands

Elizabeth Islands

The Elizabeth Islands are a chain of small islands extending southwest from the southern coast of Cape Cod, Massachusetts in the United States. They are located at the outer edge of Buzzards Bay, north of Martha's Vineyard from which they are separated by Vineyard Sound, and constitute the town of...

, Martha's Vineyard

Martha's Vineyard

Martha's Vineyard is an island located south of Cape Cod in Massachusetts, known for being an affluent summer colony....

, and Nantucket Island, all beyond the eastern end of Long Island

Long Island

Long Island is an island located in the southeast part of the U.S. state of New York, just east of Manhattan. Stretching northeast into the Atlantic Ocean, Long Island contains four counties, two of which are boroughs of New York City , and two of which are mainly suburban...

. In 1691, the entire county was transferred to the newly formed Province of Massachusetts Bay

Province of Massachusetts Bay

The Province of Massachusetts Bay was a crown colony in North America. It was chartered on October 7, 1691 by William and Mary, the joint monarchs of the kingdoms of England and Scotland...

, where it was divided and formed into Massachusetts' Dukes County

Dukes County, Massachusetts

-Demographics:As of the census of 2000, there were 14,987 people, 6,421 households, and 3,788 families residing in the county. The population density was 144 people per square mile . There were 14,836 housing units at an average density of 143 per square mile...

 and Nantucket County.