Deltona is a city in Volusia County, Florida, United States. It is located on the northern shore of Lake Monroe. As of the 2020 census, the city population was 93,692. It is a principal city of the Deltona–Daytona Beach–Ormond Beach metropolitan area, which was home to an estimated 685,344 people in 2021. It is the second largest city in the Greater Orlando combined statistical area. The city, previously known as Deltona Lakes, was originally established as a planned residential community, and was master-planned and developed by the General Development Corporation and the Mackle Brothers. Since its opening in 1962, the community rapidly grew from a small subdivision to becoming one of largest cities in Central Florida by the end of the 20th century, largely in part by the Mackle Brothers' worldwide marketing efforts showcasing small low maintenance homes offered at affordable prices. The city is mostly residential, and primarily serves as a commuter town for the nearby cities of Orlando and Daytona Beach, as well as its surrounding communities.