South Wallins, KY has a population of 544 and is the 19,049th largest city in the United States. The population density is 87 per sq mi which is 20% lower than the Kentucky average and 4% lower than the national average. The median age in South Wallins is 48 which is approximately 25% higher than the Kentucky average of 39. In South Wallins, 73% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 77% of South Wallins residents were born in Kentucky, 23% were born out of state, 0% were born outside of the United States and 0% were foreign born.