Page usernames are available on a first come, first serve basis. Usernames can not be reused after a Page has been deleted. Please keep in mind that an unavailable username may also belong to a Page that isn't currently published for public view. Username can't be transferred between Pages or Profiles.
Not all Pages are eligible for a username. Pages mus have 25 likes before they become eligible. Usernames can only be set once, including the first time you choose your Page username.
You can find our username guidelines in our Help Center: https://www.facebook.com/help/105399436216001/?ref=u2u
You can find the steps to updating your Page username here: https://www.facebook.com/help/203523569682738/?ref=u2u
