Because communities on Reddit are shared spaces that in many ways belong to the members of the community as much as the creator, there’s no way to delete a community.
However, if you created a community that you don’t want anymore or don’t have use for, you can remove yourself as a moderator. You can also make a post in r/adoptareddit to let other people know that the name is up for grabs if they’d like to take over the community for you.
Are you a moderator?
Check out our Mod Help Center for more information and resources for mods.