Fall Branch, TN has a population of 1,951 and is the 11,169th largest city in the United States. The population density is 432 per sq mi which is 182% higher than the Tennessee average and 377% higher than the national average. The median age in Fall Branch is 44 which is approximately 15% higher than the Tennessee average of 39. In Fall Branch, 70% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 68% of Fall Branch residents were born in Tennessee, 32% were born out of state, 0% were born outside of the United States and 0% were foreign born.