Mountain City, TN has a population of 2,457 and is the 9,951st largest city in the United States. The population density is 729 per sq mi which is 376% higher than the Tennessee average and 705% higher than the national average. The median age in Mountain City is 46 which is approximately 19% higher than the Tennessee average of 39. In Mountain City, 60% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 42% of Mountain City residents were born in Tennessee, 55% were born out of state, 0% were born outside of the United States and 2% were foreign born.