Tolstoy is a town in Potter County, South Dakota, United States.

[7] According to the United States Census Bureau, the town has a total area of 0.18 square miles (0.47 km2), all land.

40.0% of all households were made up of individuals, and 10% had someone living alone who was 65 years of age or older.

There were 47 housing units at an average density of 262.4 per square mile (101.3/km2).

31.0% of all households were made up of individuals, and 20.7% had someone living alone who was 65 years of age or older.

There were 11.8% of families and 19.2% of the population living below the poverty line, including 100.0% of under eighteens and none of those over 64.