Essex is a village in Kankakee County, Illinois, United States. The population was 554 at the 2000 census. It is included in the Kankakee-Bradley, Illinois Metropolitan Statistical Area.
Essex is located at 41°10′39″N 88°11′29″W / 41.1775°N 88.19139°W / 41.1775; -88.19139 (41.177620, -88.191338).
According to the United States Census Bureau, the village has a total area of 2.0 square miles (5.3 km²), of which, 2.0 square miles (5.3 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.98%) is water.