Lockhart, FL has a population of 14,665 and is the 2,885th largest city in the United States. The population density is 3,304 per sq mi which is 1025% higher than the Florida average and 3547% higher than the national average. The median age in Lockhart is 33 which is approximately 21% lower than the Florida average of 42. In Lockhart, 41% of the population over 15 years of age are married, 81% speak English and 14% speak Spanish. 45% of Lockhart residents were born in Florida, 35% were born out of state, 9% were born outside of the United States and 11% were foreign born.