Sewanee, TN has a population of 2,503 and is the 9,851st largest city in the United States. The population density is 644 per sq mi which is 321% higher than the Tennessee average and 611% higher than the national average. The median age in Sewanee is 21 which is approximately 45% lower than the Tennessee average of 39. In Sewanee, 21% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 19% of Sewanee residents were born in Tennessee, 77% were born out of state, 1% were born outside of the United States and 3% were foreign born.