Revillo is a town in southeastern Grant County, South Dakota, United States.

[7] According to the United States Census Bureau, the town has a total area of 0.17 square miles (0.44 km2), all land.

39.6% of all households were made up of individuals, and 28.3% had someone living alone who was 65 years of age or older.

45.7% of all households were made up of individuals, and 20.0% had someone living alone who was 65 years of age or older.

There were none of the families and 8.3% of the population living below the poverty line, including no under eighteens and 27.3% of those over 64.

Media related to Revillo, South Dakota at Wikimedia Commons