South Weldon, NC has a population of 542 and is the 19,080th largest city in the United States. The population density is 1,245 per sq mi which is 588% higher than the North Carolina average and 1274% higher than the national average. The median age in South Weldon is 39 which is approximately 2% higher than the North Carolina average of 38. In South Weldon, 28% of the population over 15 years of age are married, 92% speak English and 8% speak Spanish. 76% of South Weldon residents were born in North Carolina, 24% were born out of state, 0% were born outside of the United States and 0% were foreign born.