Duck, NC has a population of 525 and is the 19,239th largest city in the United States. The population density is 217 per sq mi which is 20% higher than the North Carolina average and 140% higher than the national average. The median age in Duck is 63 which is approximately 64% higher than the North Carolina average of 38. In Duck, 71% of the population over 15 years of age are married, 96% speak English and 0% speak Spanish. 14% of Duck residents were born in North Carolina, 81% were born out of state, 1% were born outside of the United States and 4% were foreign born.