Port Jefferson, also known as Port Jeff, is an incorporated village in the town of Brookhaven in Suffolk County, New York, on the North Shore of Long Island. Officially known as the Incorporated Village of Port Jefferson, the population was 7,962 as of the 2020 United States census. Port Jefferson was first settled in the 17th century and remained a rural community until its development as an active shipbuilding center in the mid-19th century.
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