Dix is a village in Jefferson County, Illinois, United States. The population was 494 at the 2000 census. It is part of the Mount Vernon Micropolitan Statistical Area.
Dix is located at 38°26′26″N 88°56′33″W / 38.44056°N 88.9425°W / 38.44056; -88.9425 (38.440676, -88.942463).
According to the United States Census Bureau, the village has a total area of 2.1 square miles (5.4 km²), of which, 2.1 square miles (5.4 km²) of it is land and 0.48% is water.