Athens, TN has a population of 13,651 and is the 3,060th largest city in the United States. The population density is 879 per sq mi which is 474% higher than the Tennessee average and 870% higher than the national average. The median age in Athens is 39 which is approximately 1% higher than the Tennessee average of 39. In Athens, 52% of the population over 15 years of age are married, 94% speak English and 5% speak Spanish. 66% of Athens residents were born in Tennessee, 28% were born out of state, 0% were born outside of the United States and 6% were foreign born.