Mauldin, SC has a population of 24,723 and is the 1,761st largest city in the United States. The population density is 2,483 per sq mi which is 1583% higher than the South Carolina average and 2641% higher than the national average. The median age in Mauldin is 38 which is approximately 3% lower than the South Carolina average of 39. In Mauldin, 53% of the population over 15 years of age are married, 89% speak English and 8% speak Spanish. 45% of Mauldin residents were born in South Carolina, 47% were born out of state, 2% were born outside of the United States and 7% were foreign born.