Moncks Corner, SC has a population of 9,300 and is the 4,151st largest city in the United States. The population density is 1,215 per sq mi which is 724% higher than the South Carolina average and 1241% higher than the national average. The median age in Moncks Corner is 35 which is approximately 10% lower than the South Carolina average of 39. In Moncks Corner, 52% of the population over 15 years of age are married, 95% speak English and 3% speak Spanish. 63% of Moncks Corner residents were born in South Carolina, 34% were born out of state, 1% were born outside of the United States and 2% were foreign born.