Garden City, SC has a population of 9,456 and is the 4,110th largest city in the United States. The population density is 1,758 per sq mi which is 1092% higher than the South Carolina average and 1840% higher than the national average. The median age in Garden City is 59 which is approximately 52% higher than the South Carolina average of 39. In Garden City, 66% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 27% of Garden City residents were born in South Carolina, 67% were born out of state, 1% were born outside of the United States and 4% were foreign born.