Florence, AZ has a population of 26,221 and is the 1,642nd largest city in the United States. The population density is 419 per sq mi which is 629% higher than the Arizona average and 362% higher than the national average. The median age in Florence is 41 which is approximately 10% higher than the Arizona average of 37. In Florence, 38% of the population over 15 years of age are married, 67% speak English and 29% speak Spanish. 35% of Florence residents were born in Arizona, 46% were born out of state, 1% were born outside of the United States and 17% were foreign born.