Oglala, SD has a population of 1,552 and is the 12,481st largest city in the United States. The population density is 124 per sq mi which is 1048% higher than the South Dakota average and 37% higher than the national average. The median age in Oglala is 25 which is approximately 32% lower than the South Dakota average of 37. In Oglala, 22% of the population over 15 years of age are married, 74% speak English and 0% speak Spanish. 81% of Oglala residents were born in South Dakota, 19% were born out of state, 0% were born outside of the United States and 1% were foreign born.