Henderson, TN has a population of 6,491 and is the 5,470th largest city in the United States. The population density is 832 per sq mi which is 443% higher than the Tennessee average and 818% higher than the national average. The median age in Henderson is 27 which is approximately 31% lower than the Tennessee average of 39. In Henderson, 42% of the population over 15 years of age are married, 95% speak English and 1% speak Spanish. 63% of Henderson residents were born in Tennessee, 33% were born out of state, 1% were born outside of the United States and 3% were foreign born.