Orangeburg, SC has a population of 13,478 and is the 3,105th largest city in the United States. The population density is 1,497 per sq mi which is 915% higher than the South Carolina average and 1553% higher than the national average. The median age in Orangeburg is 28 which is approximately 27% lower than the South Carolina average of 39. In Orangeburg, 34% of the population over 15 years of age are married, 93% speak English and 5% speak Spanish. 73% of Orangeburg residents were born in South Carolina, 23% were born out of state, 1% were born outside of the United States and 3% were foreign born.