Xenia Township ( ) is one of twelve townships in Clay County, Illinois, USA.  As of the 2020 census, its population was 617 and it contained 303 housing units.

Geography
According to the 2010 census, the township (N½ T2N R5E) has a total area of , of which  (or 99.95%) is land and  (or 0.05%) is water.

Cities, towns, villages
 Xenia

Unincorporated towns
 Greendale
(This list is based on USGS data and may include former settlements.)

Cemeteries
The township contains these four cemeteries: Camp Ground, Independent Order of Oddfellows, Salem and Toliver.

Major highways
  US Route 50

Demographics
As of the 2020 census there were 617 people, 265 households, and 116 families residing in the township. The population density was . There were 303 housing units at an average density of . The racial makeup of the township was 93.84% White, 0.16% African American, 0.32% Native American, 0.32% Asian, 0.00% Pacific Islander, 0.32% from other races, and 5.02% from two or more races. Hispanic or Latino of any race were 2.43% of the population.

There were 265 households, out of which 24.50% had children under the age of 18 living with them, 31.32% were married couples living together, 3.40% had a female householder with no spouse present, and 56.23% were non-families. 46.00% of all households were made up of individuals, and 19.20% had someone living alone who was 65 years of age or older. The average household size was 2.06 and the average family size was 3.16.

The township's age distribution consisted of 26.3% under the age of 18, 8.0% from 18 to 24, 16.6% from 25 to 44, 25.1% from 45 to 64, and 23.9% who were 65 years of age or older. The median age was 43.6 years. For every 100 females, there were 129.8 males. For every 100 females age 18 and over, there were 131.6 males.

The median income for a household in the township was $27,344, and the median income for a family was $62,778. Males had a median income of $41,719 versus $25,938 for females. The per capita income for the township was $19,784. About 6.0% of families and 24.1% of the population were below the poverty line, including 9.7% of those under age 18 and 36.6% of those age 65 or over.

School districts
 Flora Community Unit School District 35

Political districts
 Illinois' 19th congressional district
 State House District 108
 State Senate District 54

References
 

 United States Census Bureau 2007 TIGER/Line Shapefiles
 United States National Atlas

External links
 City-Data.com
 Illinois State Archives

Townships in Clay County, Illinois
Townships in Illinois