High Quality Content by WIKIPEDIA articles! Xenia is a village in Clay County, Illinois, United States. The population was 407 at the 2000 census. Xenia is located at 38°38 15 N 88°38 15 W / 38.6375°N 88.6375°W / 38.6375, -88.6375 (38.6373694, -88.6374130). According to the United States Census Bureau, the village has a total area of 0.5 square miles (1.3 km²), all of it land. As of the census of 2000, there were 407 people, 180 households, and 111 families residing in the village. The population... Mehr