What happens when you create a Facebook group
When you create a Facebook group, you become the admin — the person who controls who joins, what gets posted, and what data Facebook collects about the group's activity. Facebook stores the group's name, description, member list, all posts and comments, photos, and metadata about when people joined and what they interacted with. You can make the group public (anyone can see it and join), closed (anyone can see it but only invited members can join), or secret (only invited members can see it exists).
The privacy setting you choose affects who can see your group's content, but it does not change what Facebook itself collects. Facebook tracks which members view which posts, how long they spend looking at content, who reacts to what, and who messages whom within the group. This data is tied to each person's Facebook account and used to build profiles for advertising purposes.
Key Takeaways
- Creating a group gives you admin control over membership and content, but Facebook collects data on all activity regardless of the group's privacy setting.
- Public groups let anyone join and see all posts; closed groups hide membership but let anyone request to join; secret groups are invisible to non-members.
- You can limit what data Facebook collects by restricting who can post, turning off the group's activity log, and not uploading photos or documents that contain personal information.
- If you delete a group, all posts and comments are removed, but Facebook may retain metadata about the group's existence for a period of time.
Step-by-step: creating a Facebook group
Open Facebook on your phone or computer and look for the menu icon (three horizontal lines on mobile, or the down arrow in the top right on desktop). Select "Groups" from the menu, then tap or click the "Create Group" button. Facebook will ask you to name the group, add a description, and choose a privacy setting.
Type a name that describes the group's purpose — this appears publicly if the group is public or closed. Write a description that explains what the group is for; this helps people understand whether they want to join. Choose your privacy setting: public means anyone can find and join the group; closed means anyone can find it but only invited members can see posts; secret means only people you invite can see the group exists.
After you create the group, Facebook asks you to invite members. You can search for people by name, select them from your friends list, or copy a link to share. You do not have to invite anyone when ready — you can add members later by sending them the group link or by searching for them in the group settings.
Privacy settings and what each one means for your data
A public group is visible to all Facebook users. Anyone can see the group's name, description, member list, and all posts and comments. Anyone can join without your permission. Facebook uses all of this content to train its algorithms and show ads to members based on what they post and interact with in the group.
A closed group is visible to all Facebook users, but only invited members can see the posts inside it. Anyone can request to join, and you (as admin) decide whether to accept or deny the request. Facebook still collects data on all posts, comments, and member interactions, but non-members cannot see the content itself.
A secret group does not appear in search results or on member profiles. Only people you invite can see that the group exists. Facebook still collects the same data on posts and interactions, but the group is hidden from the broader Facebook audience. This is the most private option, but it requires you to manually invite each member.
Managing what information the group collects
Once the group is created, you can control some of what gets recorded. In the group settings, you can turn off the activity log, which prevents Facebook from showing a timeline of who joined when and who posted what. You can also restrict who can post — for example, only admins can post, or only members can post but not comment. Limiting posts reduces the amount of data Facebook collects about member interactions.
Be cautious about what members upload to the group. Photos, documents, and links all get stored and analyzed by Facebook. If members share personal information — addresses, phone numbers, financial details — that data is now part of the group's record and tied to their accounts. You can set rules in the group description asking members not to share sensitive information, but you cannot prevent them from doing so.
If you want to reduce data collection further, avoid uploading files or images that contain personal details. Do not use the group to share documents with account numbers, identification numbers, or location information. The less sensitive data in the group, the less Facebook has to build profiles from.
What happens to the group if you delete it
If you delete a group, all posts, comments, photos, and member records are removed from the group itself. Members will no longer see the group in their list, and the group will not appear in search results. However, Facebook may retain information about the group's existence — including that it was created, when it was deleted, and possibly aggregated data about its activity — for internal record-keeping and legal compliance purposes.
Individual members' copies of posts they made or photos they uploaded may still exist in their own accounts or in Facebook's backup systems. Deleting the group does not delete posts from members' personal timelines or remove photos from their photo albums. If you want to may support content is removed, you would need to ask members to delete their own posts or contact Facebook directly about specific content.
Transferring admin control or closing the group
If you want to step back from managing the group but keep it active, you can make another member an admin. Go to the group settings, find the Members section, and select a member to promote to admin. You can have multiple admins, and you can remove yourself as admin once someone else is in place. The new admin will have the same control over membership, posts, and settings that you had.
If you want to keep the group but make it inactive, you can restrict posting to admins only or turn off notifications so members stop expecting activity. This keeps the group visible but prevents new content from being added. Members can still see the group's history and message each other, but the group stops generating new data for Facebook to collect.
Frequently Asked Questions
Can I change a group from public to secret after I create it?
Yes. Go to the group settings and select "Edit Group Settings." You can change the privacy level at any time. If you change from public to secret, existing members stay in the group, but new people cannot find it through search. All past posts remain visible to current members.
Do group members see my personal information when I create a group?
Members can see your name and profile picture because you are listed as the admin. They cannot see your email, phone number, or other account details unless you share them in the group. Your admin status is public, but your personal data is not automatically exposed.
Can I prevent Facebook from collecting data about the group?
No. Facebook collects data on all groups regardless of privacy settings. You can limit what data exists by restricting posts, not uploading sensitive documents, and keeping the group small, but you cannot stop Facebook from tracking member activity and using it for advertising purposes.
What if someone posts something I do not want in the group?
As admin, you can delete the post, remove the member, or restrict who can post in the group settings. You can also set group rules in the description that explain what is and is not allowed. Members who break the rules can be warned, temporarily muted, or removed from the group entirely.
If I leave a group I created, does someone else become admin?
No. You must assign another member as admin before you leave. If you leave without doing this, the group will have no admin and members cannot add new members or change settings. You can rejoin and reassign an admin, but the group will be inactive in the meantime.