Atlantic City is a census-designated place (CDP) in Fremont County, Wyoming, United States.

The community is a small mining settlement in a gulch near South Pass in southwestern Wyoming.

[5] According to the United States Census Bureau, the CDP has a total area of 7.8 square miles (20.2 km2), all land.

Public education in the community of Atlantic City is provided by Fremont County School District #1.

In The Outlaw Trail: A Journey Through Time, Robert Redford states, "There is only one hub of activity in Atlantic City.

It is the Mercantile, a combination bar and general store where one can get any supplies needed to survive or thrive.