Atlantis is a city in Palm Beach County, Florida, United States. The population was 2,005 at the 2000 census. According to the U.S Census estimates of 2005, the city had a population of 2,142.
Atlantis is located at 26°35′36″N 80°06′16″W / 26.593296°N 80.104531°W / 26.593296; -80.104531.
According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.7 km²). 1.4 square miles (3.5 km²) of it is land and 0.04 square miles (0.1 km²) of it (2.84%) is water.