Pine Ridge, SD has a population of 3,341 and is the 8,283rd largest city in the United States. The population density is 1,178 per sq mi which is 10793% higher than the South Dakota average and 1200% higher than the national average. The median age in Pine Ridge is 24 which is approximately 35% lower than the South Dakota average of 37. In Pine Ridge, 23% of the population over 15 years of age are married, 83% speak English and 0% speak Spanish. 83% of Pine Ridge residents were born in South Dakota, 16% were born out of state, 0% were born outside of the United States and 0% were foreign born.