Florence, AL has a population of 39,938 and is the 1,036th largest city in the United States. The population density is 1,531 per sq mi which is 1564% higher than the Alabama average and 1589% higher than the national average. The median age in Florence is 38 which is approximately 1% lower than the Alabama average of 39. In Florence, 52% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 65% of Florence residents were born in Alabama, 32% were born out of state, 1% were born outside of the United States and 3% were foreign born.