Vault 711 is a vault in Gringotts Wizarding Bank that belonged to Sirius Black. It may have been the vault for the House of Black in general, as Sirius inherited all of the property and the last of the fortune of the House of Black upon his mother's death, though it is possible that Sirius acquired his own vault after being disowned using the money left to him by his uncle Alphard Black.
Sirius used gold from his vault to pay for Harry Potter's Firebolt in 1993. In 1996, when Harry inherited the contents of the vault after Sirius's death, it still contained a "reasonable amount of gold". Given its depth, it is likely a high-security vault.
Behind the scenes
- It is interesting to note that Sirius Black's death occurred on page 711 of the Harry Potter and the Order of the Phoenix book.
- Harry Potter and the Prisoner of Azkaban (Mentioned only)
- Harry Potter and the Half-Blood Prince (Mentioned only)