Clay City, IL
Clay City is a village in Clay County, Illinois, United States. The population was 1,000 at the 2000 census.
Clay City is located at 38°41′13″N 88°21′11″W / 38.68694°N 88.35306°W / 38.68694; -88.35306 (38.686883, -88.353121).
According to the United States Census Bureau, the village has a total area of 1.8 square miles (4.6 km²), all of it land.