Organisers have revealed the 2019 edition of Adelaide Festival was the event's most successful year in its 59-year history.

According to a report by Economic Research Consultants, the Festival generated an estimated gross expenditure of $76.8 million for the state throughout its March run. 

The report also revealed 19,046 festival attendees came from interstate or overseas.

At the conclusion of the event in March, it was also announced that the Festival broke its box office takings record, achieving a total income of over $6 million, a 32% increase on the previous year. 

"Each year, the Adelaide Festival’s economic impact has continued to steadily increase, providing a vital injection to the State’s economy," said Judy Potter, Chair of the Adelaide Festival. 

"The Festival is such an important part of South Australia’s identity and today, quite distinct from its enormous cultural significance, this result celebrates its importance in boosting our economy through cultural tourism."

Joint Artistic Director Rachel Healy shared Potter's sentiments. 

“We are delighted that the Adelaide Festival has again proved its importance to the South Australian economy; a measure of its value that sits alongside its cultural and reputational significance," she said. 

"Of course, its economic impact is possible because of the Adelaide Festival’s catalytic role in bringing audiences and communities together with the world’s greatest performers, writers and artists. Indeed, it is the promise of these thrilling, communal experiences each March that has kept visitors from around Australia and across the world pouring in to Adelaide.”