Harmony is a town in Van Buren Township, Clay County, Indiana, United States.

[4] Coal Company Store was listed on the National Register of Historic Places between 1986 and 1992.

[6] According to the 2010 census, Harmony has a total area of 0.74 square miles (1.92 km2), all land.

There were 292 housing units at an average density of 389.3 per square mile (150.3/km2).

30.2% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older.

27.8% of all households were made up of individuals, and 10.8% had someone living alone who was 65 years of age or older.