Islandia straddles the Long Island Expressway and is near the geographic center of Long Island. It has no central business district, although it is home to the Islandia Center, which has a Walmart and Dave & Buster's. It was established in 1985 after CA Technologies established its world headquarters in Hauppauge and trying to capture the Hauppauge School District, in the area some people considered to be South Hauppauge, however there was never a South Hauppauge, and Islandia became its own incorporated Village in 1985.