Cavour is a town in Beadle County, South Dakota, United States.

[7] The town was named for Camillo Benso, Count of Cavour, an Italian statesman.

According to the United States Census Bureau, the town has a total area of 0.41 square miles (1.06 km2), all land.

39.3% of all households were made up of individuals, and 12.5% had someone living alone who was 65 years of age or older.

33.3% of all households were made up of individuals, and 10.0% had someone living alone who was 65 years of age or older.

There were 5.9% of families and 2.5% of the population living below the poverty line, including no under eighteens and none of those over 64.