Siler City, NC has a population of 8,269 and is the 4,591st largest city in the United States. The population density is 1,380 per sq mi which is 533% higher than the North Carolina average and 1424% higher than the national average. The median age in Siler City is 32 which is approximately 16% lower than the North Carolina average of 38. In Siler City, 53% of the population over 15 years of age are married, 61% speak English and 38% speak Spanish. 63% of Siler City residents were born in North Carolina, 14% were born out of state, 0% were born outside of the United States and 23% were foreign born.