Princeton, SC has a population of 35 and is the 28,498th largest city in the United States. The population density is 47 per sq mi which is 68% lower than the South Carolina average and 48% lower than the national average. The median age in Princeton is 59 which is approximately 52% higher than the South Carolina average of 39. In Princeton, 77% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 83% of Princeton residents were born in South Carolina, 0% were born out of state, 17% were born outside of the United States and 0% were foreign born.