Iselin (/ˈɪzˈlɪn/[9]) is an unincorporated community and census-designated place (CDP)[10] located within Woodbridge Township, in Middlesex County, in the U.S. state of New Jersey.

[14] Previously known as "Perrytown" and "Unionville", Iselin received its current name after New York City investment banker and philanthropist Adrian Iselin, who established a finishing school in the 1870s for girls from wealthy New York families there.

[1] It is drained to the northeast by the South Branch of the Rahway River Iselin's downtown is centered on Little India (also known as "Oak Tree Road"), bound by the Garden State Parkway to the west and Route 27 (Lincoln Highway) to the southeast.

Once home to a wide array of shops, eateries, services, and complemented by a single-screen 1920s movie palace, the area was in obvious decline in the 1980s.

An influx of Asian Indian immigration beginning in the early 1990s led to the area's revitalization.

Formerly vacant stores were tenanted, and additional retail spaces built as the area became known for its high quality Indian food, sweets, clothing (particularly saris), jewelry, music, and other goods.

Other corporate residents in the area include Siemens,[18] Tata Consultancy Services, Mott MacDonald,[19] Ernst & Young, Mizuho, Wells Fargo, JPMorgan Chase, Accenture, Level 3 Communications, BT Group, UBS, Elevance Health, and TIAA.

[20] Iselin hosts one of the region's main centers of Indian American cultural diversity.

[25] The zone is the largest and most diverse South Asian cultural hub in the United States.

[26][27] In Middlesex County, election ballots are printed in English, Spanish, Gujarati, Hindi, and Punjabi.