Middle Valley, TN has a population of 12,699 and is the 3,267th largest city in the United States. The population density is 1,301 per sq mi which is 750% higher than the Tennessee average and 1336% higher than the national average. The median age in Middle Valley is 41 which is approximately 6% higher than the Tennessee average of 39. In Middle Valley, 64% of the population over 15 years of age are married, 94% speak English and 2% speak Spanish. 65% of Middle Valley residents were born in Tennessee, 30% were born out of state, 1% were born outside of the United States and 4% were foreign born.