Gastonia, NC has a population of 73,877 and is the 482nd largest city in the United States. The population density is 1,432 per sq mi which is 691% higher than the North Carolina average and 1480% higher than the national average. The median age in Gastonia is 37 which is approximately 2% lower than the North Carolina average of 38. In Gastonia, 52% of the population over 15 years of age are married, 89% speak English and 8% speak Spanish. 65% of Gastonia residents were born in North Carolina, 27% were born out of state, 1% were born outside of the United States and 7% were foreign born.