Iselin is an unincorporated community and census-designated place located within Woodbridge Township, in Middlesex County, New Jersey, United States. As of the 2010 United States Census, the CDP's population was 18,695.Previously known as Perrytown and Unionville, Iselin received its current name after New York investment banker and philanthropist Adrian Georg Iselin, who established a finishing school in the 1870s for girls from wealthy New York... Show more

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