Cobalt is a village in Madison County, Missouri, United States.

According to the U.S. Census Bureau, the village has a total area of 0.15 square miles (0.39 km2), all land.

31.9% of all households were made up of individuals, and 8.5% had someone living alone who was 65 years of age or older.

As of the 2000 United States Census,[5] there were 189 people, 79 households, and 54 families living in the village.

24.1% of all households were made up of individuals, and 10.1% had someone living alone who was 65 years of age or older.

About 1.8% of families and 8.4% of the population were below the poverty line, including none of those under the age of eighteen and 7.1% of those 65 or over.