Gayle Mill, SC has a population of 761 and is the 16,937th largest city in the United States. The population density is 1,164 per sq mi which is 689% higher than the South Carolina average and 1185% higher than the national average. The median age in Gayle Mill is 41 which is approximately 4% higher than the South Carolina average of 39. In Gayle Mill, 49% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 82% of Gayle Mill residents were born in South Carolina, 18% were born out of state, 0% were born outside of the United States and 0% were foreign born.