Benton, KY has a population of 4,483 and is the 6,938th largest city in the United States. The population density is 997 per sq mi which is 820% higher than the Kentucky average and 1000% higher than the national average. The median age in Benton is 43 which is approximately 11% higher than the Kentucky average of 39. In Benton, 64% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 69% of Benton residents were born in Kentucky, 29% were born out of state, 1% were born outside of the United States and 1% were foreign born.