Xenia (/ˈziːniə/ ZEE-nee-ə) is a village in Clay County, Illinois, United States.

According to the 2021 census gazetteer files, Xenia has a total area of 0.49 square miles (1.27 km2), all land.

[3] The hunting camps of Kiffcart and Retherford were located in the southwest corner of Section 4.

The buffalo trail was very wide in this area; therefore, Lewis located in the northwest quarter of Section 3.

41.03% of all households were made up of individuals, and 16.67% had someone living alone who was 65 years of age or older.