Dukes County, Province of New York

{{Use American English|date = October 2019}}

{{Use mdy dates|date = October 2019}}

{{Infobox former subdivision

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|native_name =

|conventional_long_name = Dukes County

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|subdivision = County

|nation = Province of New York

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|coordinates = {{coord|41.341|-70.820|type:adm3rd_globe:earth_region:US-NY|display=ti}}

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|year_start = 1683

|year_end = 1691

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|date_start = November 1,

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|membership_title1 = Crown colony

|membership1 = {{Flagicon image|Red ensign of Great Britain (1707–1800, square canton).svg}} Province of New York

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|s1 = Dukes County, Massachusetts{{!}}Dukes County

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|s2 = Nantucket

|flag_s2 = Flag of Nantucket, Massachusetts.svg

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|today = {{flag|United States}}

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Dukes County was a county of the Province of New York from 1683 to 1691. It was established on November 1, 1683, at the same time as Kings County, Queens County, and Dutchess County. It consisted of the Elizabeth Islands, Martha's Vineyard, and Nantucket Island, all east of Long Island. In 1691, the county was transferred to the newly formed Province of Massachusetts Bay, where it was divided into Dukes County and Nantucket in Massachusetts.