Jay Gatsby’s mansion is located in the fictional Long Island village of West Egg.
In Fitzgerald’s The Great Gatsby, West Egg is the home of newly rich residents, including Nick Carraway and Gatsby. Gatsby’s enormous mansion stands next to Nick’s smaller bungalow, allowing Nick to observe the parties, visitors, and mysterious host at close range.
West Egg sits across the water from East Egg, where Daisy and Tom Buchanan live. The two fictional communities represent contrasting types of wealth: West Egg is associated with recently acquired money, while East Egg represents established social status and inherited privilege. The geography creates the physical and social distance between Gatsby and Daisy.
The names are fictional, but Fitzgerald drew inspiration from Long Island’s Gold Coast. West Egg is commonly linked with Great Neck and Kings Point, while East Egg evokes areas around Port Washington and Sands Point. Manhasset and Great Neck are real places, not the answer to this literary question.