How to Find a Facebook Group ID (and Why URLs Hide It)

A Facebook group ID is the numeric identifier in a group URL of the form facebook.com/groups/123456789012345. Groups that have set a custom username show a slug instead, such as /groups/coffeelovers, and the number is not visible anywhere in that URL. Recovering it means resolving the slug or reading the page source.

This is a genuinely annoying asymmetry. A group either shows you the ID or it shows you a name, and the group admin chose which, probably without knowing the consequence. Half your list of client group URLs will be straightforward and half will be opaque, with nothing to indicate why.

Why do some Facebook group URLs hide the ID?

Because a custom username replaces it rather than supplementing it. Facebook lets group admins claim a vanity slug for the same reason it lets Pages do so: a memorable URL is easier to share verbally, print on a flyer, or type from memory than a fifteen-digit number.

When an admin sets that username, the group's canonical URL becomes the slug form. Visiting the numeric URL will generally still reach the group, because the ID never stopped being valid, but Facebook serves and displays the pretty version. So the number exists, it still works, and the URL in your spreadsheet simply does not contain it.

There is a second wrinkle worth knowing about: a vanity slug can be changed, and when it is, the old slug may stop resolving. The numeric ID you stored earlier still identifies the same group. This is the same argument that applies to Pages and profiles, which is to say that the ID is the stable reference and the name is not. If you are storing group references for any integration, store the number.

How do you find the ID when the URL only shows a slug?

Three approaches, in rough order of how much effort they cost.

Check whether the URL already has it

Obvious, but worth one glance. If the path segment after /groups/ is all digits, that is the ID. Strip any trailing path or query parameters, because group URLs frequently arrive with ?ref=share or similar appended, and a naive copy-paste will include them.

Watch for a subtler case: a URL like /groups/123456789/posts/987654321/ contains two numbers. The first, immediately after /groups/, is the group ID. The second is a post reference. Taking the wrong one gives you a number that looks perfectly valid and addresses nothing you wanted.

Read it out of the page source

Open the group in a browser, view source, and search the HTML for identifying tokens. Values such as groupID, entity_id, or the app deep-link form fb://group/ commonly appear with the numeric ID adjacent to them. This works because the page has to know its own ID in order to function, whatever the URL says.

Treat this as a manual fallback rather than a method. Facebook's markup is minified, obfuscated and rewritten frequently, so a search pattern that works today may find nothing next month. It is useful for one stubborn group, not for a workflow.

Resolve the public URL with a lookup

Paste the group URL into the Facebook ID finder and read the number off. This handles both the slug case and URLs cluttered with tracking parameters, and it needs no login or developer credentials.

The limit here is real and worth stating plainly: this works for publicly visible groups. A private group, and more so a hidden one, is not publicly resolvable, and no tool that stays within the platform's rules can change that. If the lookup fails on a private group, that is the privacy model functioning correctly rather than a deficiency in the tool.

Which group URL formats contain the ID?

Knowing the shapes saves you from guessing. These are the forms you will encounter in practice.

That last row catches people constantly, because share links are how group URLs usually travel. Someone copies a group from the mobile app, shares it in a chat, and what arrives is a shortened or wrapped URL whose destination is not visible. Run it through the share link expander to recover the original URL, then resolve that. Attempting an ID lookup on an unexpanded share link will simply fail, and the failure will look like the group is private when it is not.

What can you actually do with a Facebook group ID?

Less than you might hope, and this is the part most tutorials gloss over. Be realistic about it before you plan an integration around group data.

Meta has progressively narrowed group APIs over several years. Capabilities that older blog posts and Stack Overflow answers describe in confident detail have in many cases been removed or restricted behind permissions that require app review. If you are scoping a project that depends on reading group content programmatically, verify current capability against Meta's live developer documentation before you commit to the approach. Do not take an article's word for it, including this one, because this surface changes and articles do not.

What the ID is reliably good for is identification. It is the stable key for a group in your own records, surviving slug changes and rebrands. It constructs a canonical URL that keeps working when the vanity name does not. It builds app deep links of the form fb://group/ID that open the native app directly at the group. And where group API access is available to you, it is the node address those calls need.

For social media managers tracking a portfolio of community groups, that identification role is usually the actual requirement. You want a column of stable keys so your records survive a year of admins renaming things.

Why does a group ID lookup fail?

A handful of recognisable causes, and distinguishing them saves time otherwise spent retrying.

Privacy is the most common. Private and hidden groups are not publicly resolvable, full stop. A private group may still be discoverable in search while its contents are closed, and even that minimal visibility varies, so public resolvability is not guaranteed just because you can see the group's name.

Unexpanded share links are second, as covered above. The lookup is being handed a URL that does not point anywhere it can read.

Then there are the mundane ones. The group was deleted or archived by its admins. The URL is truncated, which happens when a link is copied from a messaging app that visually shortens long URLs. The group is region-restricted and not visible from your location. Or you have the wrong number out of a multi-number URL, as in the posts case above.

One failure mode that is not a failure: you resolved the ID correctly and then could not read any group data with it. That is not a lookup problem. That is the API restriction discussed in the previous section, and no better ID will fix it.

How do group IDs compare to Page and profile IDs?

They are the same shape and completely different in behaviour, which is exactly the trap. All three are plain integers, commonly fifteen or sixteen digits, with no prefix or marker to distinguish them. You cannot determine type from the number.

What differs is everything else. Pages are public by design and expose a reasonable set of public fields. Profiles are private by default and require the person's own consent for anything meaningful. Groups are variable by configuration and have the most restricted API surface of the three. A group ID will not render in the Facebook Page Plugin, because that component is for Pages and groups have their own separate plugin.

The practical takeaway for your data model: never store a bare numeric column. Store the ID with its object type. Six months on, a spreadsheet of unlabelled numbers is a spreadsheet of unidentifiable numbers, and you will be re-resolving all of them.

Working across platforms, the same handle-versus-ID split exists everywhere with different details. Instagram user IDs are needed for Graph API calls, and TikTok user IDs come in two flavours at once, a numeric UID and a separate opaque string. Neither maps cleanly onto Facebook's model.

Frequently asked questions

Can I find the ID of a private Facebook group?

Not through public lookup. Private and hidden groups are not publicly resolvable, and any tool claiming to resolve them is either guessing or operating outside the platform's rules. If you are a member, the ID may be visible in the URL once you are viewing the group while logged in, or in the page source.

Does a Facebook group ID change if the admin renames the group?

No. Renaming a group or changing its vanity username leaves the numeric ID unchanged. The old slug may stop resolving after a change, and anyone relying on a stored slug will find their link dead, while a stored numeric ID keeps pointing at the same group. Store the number.

Why does my group URL have two numbers in it?

Because it points at something inside the group rather than the group itself. In /groups/123/posts/456 the first number is the group ID and the second identifies the post. The same pattern applies to member links. Always take the number immediately after /groups/ and discard the rest of the path.

Can I read group posts using the group ID?

Probably not in the way older tutorials describe. Meta has restricted group APIs substantially over several years, and permissions that once covered group content now require app review or have been removed. Check Meta's current developer documentation for what is available before building anything that depends on programmatic group reading.

Does the group ID work in the Facebook Page Plugin?

No. The Page Plugin is built for Pages, and its documented data-href attribute expects a Page URL. Group content will not render there. Facebook provides a separate plugin for embedding group content, so consult the current social plugins documentation for what that supports and what it looks like.

What is the quickest way to get IDs for a list of group URLs?

Resolve each public URL through a lookup rather than inspecting page source one at a time. Expand any share links first, strip tracking parameters, and store each result next to its object type. Expect private groups in the list to fail, and mark them as not publicly resolvable rather than retrying them.