Tolstoy, SD has a population of 29 and is the 28,618th largest city in the United States. The population density is 159 per sq mi which is 1370% higher than the South Dakota average and 75% higher than the national average. The median age in Tolstoy is 62 which is approximately 68% higher than the South Dakota average of 37. In Tolstoy, 55% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 48% of Tolstoy residents were born in South Dakota, 52% were born out of state, 0% were born outside of the United States and 0% were foreign born.