Burlington, KY has a population of 16,347 and is the 2,614th largest city in the United States. The population density is 1,849 per sq mi which is 1606% higher than the Kentucky average and 1941% higher than the national average. The median age in Burlington is 35 which is approximately 9% lower than the Kentucky average of 39. In Burlington, 64% of the population over 15 years of age are married, 94% speak English and 4% speak Spanish. 52% of Burlington residents were born in Kentucky, 45% were born out of state, 0% were born outside of the United States and 3% were foreign born.