Calhoun, TN has a population of 618 and is the 18,257th largest city in the United States. The population density is 568 per sq mi which is 271% higher than the Tennessee average and 527% higher than the national average. The median age in Calhoun is 35 which is approximately 10% lower than the Tennessee average of 39. In Calhoun, 58% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 79% of Calhoun residents were born in Tennessee, 21% were born out of state, 0% were born outside of the United States and 0% were foreign born.