The figure is made up of 55,000 actual season tickets, as many as the club make available, plus an additional 8,000 hospitality packages.
It means United will once again play to packed houses at Old Trafford this term, David Moyes' first as Sir Alex Ferguson's successor.
"This is the strongest pre-season ticket sales performance ever by a British sports team," said group managing director Richard Arnold.
"It's a fantastic way to welcome David Moyes into his first league game in front of the United faithful."
- Sports & Recreation
- David Moyes
- Sir Alex Ferguson