Kingston is a city in Caldwell County, Missouri, United States. The population was 287 at the 2000 census. It is the county seat of Caldwell County.
Kingston is located at 39°38′35″N 94°2′18″W / 39.64306°N 94.03833°W / 39.64306; -94.03833 (39.643172, -94.038408). According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.5 km²), all of it land.
As of the census of 2000, there were 287 people, 123 households, and 76 families residing in the city. The population density was 493.9 people per square mile (191.1/km²). There were 137 housing units at an average density of 235.7 per square mile (91.2/km²). The racial makeup of the city was 98.95% White, 0.35% African American, and 0.70% from two or more races. Hispanic or Latino of any race were 0.35% of the population.