Simpson is a village in Vernon Parish, Louisiana, United States. The population was 583 at the 2000 census. It is part of the Fort Polk South Micropolitan Statistical Area.
Simpson is located at 31°15′22″N 93°1′7″W / 31.25611°N 93.01861°W / 31.25611; -93.01861 (31.256010, -93.018519).
According to the United States Census Bureau, the village has a total area of 6.2 square miles (16.1 km²). 6.2 square miles (16.1 km²) of it is land and 0.16% is water.