Prosperity, SC has a population of 1,151 and is the 14,288th largest city in the United States. The population density is 616 per sq mi which is 317% higher than the South Carolina average and 580% higher than the national average. The median age in Prosperity is 41 which is approximately 4% higher than the South Carolina average of 39. In Prosperity, 50% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 83% of Prosperity residents were born in South Carolina, 15% were born out of state, 0% were born outside of the United States and 1% were foreign born.