Town guide · North Great River
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About North Great River
Hamlet and census-designated place in New York, United States4,266Population
2.4 sq miArea
30 ftElevation
North Great River is a hamlet and census-designated place (CDP) in the Town of Islip, in Suffolk County, on Long Island, in New York, United States. As of the 2020 census, North Great River had a population of 4,266. The hamlet is served by the Islip Terrace Post Office (11752).
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