Tickets for the tournament, which is to be held in England and Wales from September 18 to October 31 next year, were released over a 17-day period last month.
There were over five million applications in total for tickets, with England's Pool A clash with Australia and the final, both of which will be staged at Twickenham, proving the most popular games among fans.
England Rugby 2015 chief executive Debbie Jevans said: "We are thrilled with demand for tickets a year out from the tournament, and the record level of demand we saw in September is a terrific indicator of the general interest and excitement for Rugby World Cup 2015.
"Demand has exceeded supply for a high number of our matches, and the only downside of such strong demand is that there will inevitably be some disappointment when rugby fans are notified of the results of their applications on Saturday.
"We would like to thank everyone who applied for tickets and anyone who missed out on tickets this time will get first priority when the remaining tickets go back on sale next month."
International Rugby Board chairman Bernard Lapasset added: "Rugby World Cup is all about the fans and the players and [Thursday's ticket] announcement reinforces our belief that Rugby World Cup 2015 will be a very special record-breaking celebration of Rugby and the host nation."