Buckner is a village in Franklin County, Illinois, United States. The population was 462 at the 2010 census. The current mayor is John Coder.
Buckner is located in west-central Franklin County at 37°58′52″N 89°0′56″W / 37.98111°N 89.01556°W / 37.98111; -89.01556 (37.981131, -89.015693). Illinois Route 14 passes through the village, leading east 5.5 miles (8.9 km) to Benton, the county seat, and west 2 miles (3 km) to Christopher.
According to the 2010 census, Buckner has a total area of 0.891 square miles (2.31 km), of which 0.87 square miles (2.25 km) (or 97.64%) is land and 0.021 square miles (0.05 km) (or 2.36%) is water.
As of the census of 2000, there were 479 people, 218 households, and 134 families residing in the village. The population density was 540.3 people per square mile (207.8/km²). There were 235 housing units at an average density of 265.1 per square mile (101.9/km²). The racial makeup of the village was 98.33% White, 0.84% Native American, and 0.84% from two or more races. Hispanic or Latino of any race were 1.25% of the population.
There were 218 households out of which 22.9% had children under the age of 18 living with them, 44.5% were married couples living together, 10.6% had a female householder with no husband present, and 38.5% were non-families. 33.0% of all households were made up of individuals and 14.7% had someone living alone who was 65 years of age or older. The average household size was 2.20 and the average family size was 2.78.
In the village, the population was spread out with 21.3% under the age of 18, 7.7% from 18 to 24, 28.0% from 25 to 44, 23.6% from 45 to 64, and 19.4% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 96.3 males. For every 100 females age 18 and over, there were 97.4 males.
The median income for a household in the village was $25,119, and the median income for a family was $29,167. Males had a median income of $24,875 versus $16,750 for females. The per capita income for the village was $12,260. About 18.9% of families and 23.3% of the population were below the poverty line, including 29.0% of those under age 18 and 3.0% of those age 65 or over.