Salem, SC has a population of 149 and is the 25,677th largest city in the United States. The population density is 163 per sq mi which is 10% higher than the South Carolina average and 80% higher than the national average. The median age in Salem is 50 which is approximately 28% higher than the South Carolina average of 39. In Salem, 62% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 66% of Salem residents were born in South Carolina, 34% were born out of state, 0% were born outside of the United States and 0% were foreign born.