Maryville, TN has a population of 28,151 and is the 1,518th largest city in the United States. The population density is 1,666 per sq mi which is 988% higher than the Tennessee average and 1739% higher than the national average. The median age in Maryville is 38 which is approximately 2% lower than the Tennessee average of 39. In Maryville, 58% of the population over 15 years of age are married, 94% speak English and 3% speak Spanish. 57% of Maryville residents were born in Tennessee, 38% were born out of state, 1% were born outside of the United States and 5% were foreign born.