Wallace, SC has a population of 716 and is the 17,326th largest city in the United States. The population density is 109 per sq mi which is 26% lower than the South Carolina average and 20% higher than the national average. The median age in Wallace is 36 which is approximately 8% lower than the South Carolina average of 39. In Wallace, 50% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 83% of Wallace residents were born in South Carolina, 17% were born out of state, 0% were born outside of the United States and 0% were foreign born.