Beaufort, SC has a population of 13,074 and is the 3,190th largest city in the United States. The population density is 467 per sq mi which is 216% higher than the South Carolina average and 415% higher than the national average. The median age in Beaufort is 33 which is approximately 14% lower than the South Carolina average of 39. In Beaufort, 53% of the population over 15 years of age are married, 91% speak English and 6% speak Spanish. 49% of Beaufort residents were born in South Carolina, 45% were born out of state, 1% were born outside of the United States and 5% were foreign born.