Deltona, FL has a population of 87,387 and is the 377th largest city in the United States. The population density is 2,344 per sq mi which is 698% higher than the Florida average and 2488% higher than the national average. The median age in Deltona is 39 which is approximately 7% lower than the Florida average of 42. In Deltona, 55% of the population over 15 years of age are married, 71% speak English and 26% speak Spanish. 33% of Deltona residents were born in Florida, 47% were born out of state, 11% were born outside of the United States and 9% were foreign born.