Carbon is a town in Van Buren Township, Clay County, Indiana, United States. The population was 397 at the 2010 census. It is part of the Terre Haute Metropolitan Statistical Area.
Carbon had its start by the building of the railroad through that territory. A post office was established at Carbon in 1870. It was named after the Carbon Coal Company.
Carbon is located at 39°35′56″N 87°6′27″W (39.598974, -87.107510).
According to the 2010 census, Carbon has a total area of 0.16 square miles (0.41 km2), all land.
As of the census of 2010, there were 397 people, 138 households, and 98 families living in the town. The population density was 2,481.3 inhabitants per square mile (958.0/km2). There were 165 housing units at an average density of 1,031.3 per square mile (398.2/km2). The racial makeup of the town was 96.7% White, 2.3% from other races, and 1.0% from two or more races. Hispanic or Latino of any race were 3.0% of the population.