When user create a Facebook Page, the system assigns a random URL to userr page that looks something like this:

https://www.facebook.com/pages/IceCream/123456
When 25 or more users have “liked” userr Facebook Page, user can choose an easy-to-remember username (or vanity URL) for userr Page that may looks like this:
https://www.facebook.com/IceCream
Once user have claimed the URL (or username) for userr Facebook Page, there was no option to change it. The only workaround was that user delete the old Facebook page (thus losing all the likes) and recreate a new one with the desired username (provided it is available).
Well that old policy seems to have changed recently and Facebook Page owners can now change the usernames of Pages that they are admin of. To get start, Open any of userr Facebook Pages, go to Edit Page – > Update Info and click the “Change Username” link under the Username option. See video demo.

Changing userr Facebook Username – Things to Know

Before user change the URL, here are few things user should know:
  • When user pick a new URL for userr Facebook Page, the old URL will no longer work (returns a 404). Therefore, make sure that user update any existing links in userr web pages, email signatures, etc. that point to the old Facebook Page URL.
  • Be very careful when choosing the new URL for userr Facebook Page because user are allowed to change the username of any Page only once.
  • Facebook Pages ignore periods (.) in the URL and they are also case insensitive. Thus facebook.com/icecream is same as facebook.com/ice.cream or even facebook.com/Ice.Cream.
The following video will quickly walk user through the process.