Largo, FL has a population of 80,678 and is the 428th largest city in the United States. The population density is 4,414 per sq mi which is 1403% higher than the Florida average and 4772% higher than the national average. The median age in Largo is 47 which is approximately 13% higher than the Florida average of 42. In Largo, 52% of the population over 15 years of age are married, 85% speak English and 9% speak Spanish. 30% of Largo residents were born in Florida, 55% were born out of state, 3% were born outside of the United States and 12% were foreign born.