Butner, NC has a population of 7,692 and is the 4,840th largest city in the United States. The population density is 548 per sq mi which is 203% higher than the North Carolina average and 505% higher than the national average. The median age in Butner is 41 which is approximately 7% higher than the North Carolina average of 38. In Butner, 46% of the population over 15 years of age are married, 84% speak English and 13% speak Spanish. 66% of Butner residents were born in North Carolina, 23% were born out of state, 2% were born outside of the United States and 8% were foreign born.