More than 70,000 Australians identified their religion as Jedi, Jedi Knight or Jedi-related in last year's national census.

The high number of Jedi-related religions was a response to an email published before the census calling on Star Wars fans to state Jedi as their religion.

"If there are enough people in the country, about 10,000, who put down the same religion, it becomes a fully recognised and legal religion," the email said.

The Australian Bureau of Statistics said Jedi or Jedi-related responses had been categorised as not defined for census output purposes.