Memphis, TN has a population of 655,857 and is the 24th largest city in the United States. The population density is 2,066 per sq mi which is 1250% higher than the Tennessee average and 2181% higher than the national average. The median age in Memphis is 34 which is approximately 13% lower than the Tennessee average of 39. In Memphis, 40% of the population over 15 years of age are married, 91% speak English and 6% speak Spanish. 65% of Memphis residents were born in Tennessee, 28% were born out of state, 1% were born outside of the United States and 6% were foreign born.