There are three main settings: East Egg and West Egg that form Long Island and Valley of Ashes. Each part of the setting is represented by certain characters.
The description of the setting starts with “Twenty miles from the city a pair of enormous eggs, identical in contour and separated only by a courtesy bay, jut out into the most domesticated body of salt water in the Western hemisphere, the great wet barnyard of Long Island Sound.”
Our narrator Nick Carraway lives at West Egg “the less fashionable of the two”. Nick lives here because he doesn’t earn much