Lanett, AL has a population of 6,454 and is the 5,493rd largest city in the United States. The population density is 1,034 per sq mi which is 1024% higher than the Alabama average and 1041% higher than the national average. The median age in Lanett is 38 which is approximately 3% lower than the Alabama average of 39. In Lanett, 50% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 80% of Lanett residents were born in Alabama, 20% were born out of state, 0% were born outside of the United States and 0% were foreign born.