What deletion actually destroys
Deleting a GitHub account feels like a clean reset.
One click, and the profile, the repos, the awkward early commits all disappear.
But deletion is not a tidy undo.
It removes specific things permanently, leaves other things behind under a different name, and starts a countdown on your username.
Before you decide, you need to know exactly what goes, what stays, and what alternatives exist.
GitHub documents the consequences clearly.
Deleting your personal account removes all repositories, forks of private repositories, wikis, issues, pull requests, and GitHub Pages sites owned by that account (GitHub Docs).
That is a wider blast radius than most people expect.
Notice what is on that list.
It is not just your code.
If you opened issues or pull requests in your own repositories, those vanish too.
If you published documentation or a project site through GitHub Pages, that site goes offline.
Forks you made of other people's private repositories are also removed.
Your account is the foundation of your GitHub identity.
It controls access to repositories, organizations, and features, and it manages your personal settings (GitHub Docs).
Deleting it therefore cuts off every access path that depended on it, including memberships and permissions tied to your login.
What survives your deletion
Here is the part that surprises people.
Your activity in other people's spaces does not disappear.
Issues and pull requests you created, and comments you made in repositories owned by other users, are not deleted (GitHub Docs).
Instead, your resources and comments become associated with the ghost user (GitHub Docs).