In a study released Wednesday, the Center for Applied Business and Economic Research found the four-day music festival contributed more than $68 million to the regional economy.
It also created the equivalent of 579 full-time jobs in 2014.
The study found as a result of the June 19 to 22, 2014 event at the Dover International Speedway, state, local and federal tax contributions totaled $9.9 million.
As part of the study, 900 festival-goers were interviewed about their purchases from onsite vendors and off-site businesses, both en route to the festival and during their time in Dover.
An additional 5,000 online survey responses were included.
Approximately 80,000 attended the 2014 festival.
30,000 fans were in attendance at the debut event in 2012.
Firefly Music Festival returns to the Woodlands at Dover International Speedway on June 18 to 21, 2015.
For more information, visit www.fireflyfestival.com