Kingston is a village in DeKalb County, Illinois, United States. The population was 1,164 at the 2010 census, up from 980 in 2000.
According to the 2010 census, Kingston has a total area of 1.015 square miles (2.63 km), of which 0.99 square miles (2.56 km) (or 97.54%) is land and 0.025 square miles (0.06 km) (or 2.46%) is water.
As of the census of 2000, there were 980 people, 328 households, and 251 families residing in the village. The population density was 976.9 people per square mile (378.4/km²). There were 338 housing units at an average density of 336.9 per square mile (130.5/km²). The racial makeup of the village was 96.43% White, 0.10% African American, 0.41% Native American, 0.20% Asian, 2.35% from other races, and 0.51% from two or more races. Hispanic or Latino of any race were 6.53% of the population.
There were 328 households out of which 46.3% had children under the age of 18 living with them, 64.0% were married couples living together, 8.5% had a female householder with no husband present, and 23.2% were non-families. 17.7% of all households were made up of individuals and 4.6% had someone living alone who was 65 years of age or older. The average household size was 2.94 and the average family size was 3.37.
In the village, the population was spread out with 33.6% under the age of 18, 6.3% from 18 to 24, 37.6% from 25 to 44, 17.1% from 45 to 64, and 5.4% who were 65 years of age or older. The median age was 31 years. For every 100 females, there were 105.5 males. For every 100 females age 18 and over, there were 112.7 males.
The median income for a household in the village was $55,179, and the median income for a family was $58,929. Males had a median income of $43,000 versus $28,083 for females. The per capita income for the village was $21,432. About 4.2% of families and 4.8% of the population were below the poverty line, including 6.1% of those under age 18 and 17.6% of those age 65 or over.