Sunbury, NC has a population of 265 and is the 23,126th largest city in the United States. The population density is 108 per sq mi which is 40% lower than the North Carolina average and 19% higher than the national average. The median age in Sunbury is 57 which is approximately 48% higher than the North Carolina average of 38. In Sunbury, 72% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 54% of Sunbury residents were born in North Carolina, 46% were born out of state, 0% were born outside of the United States and 0% were foreign born.