Question: Can I see how many duplicates there are of a post? I.e. how many posts have been labelled as duplicate because of this post? If so, how? And can I also get a list of these duplicated posts?

Answer: 
The most reliable way to do this is to [use the Data Explorer:](https://data.stackexchange.com/stackoverflow/query/162748/duplicates-for-a-given-post?OriginalPostId=8028957)

```sql
select PostId as [Post Link]
from PostLinks
where RelatedPostId=##OriginalPostId##
and LinkTypeId=3 -- duplicate

```

This will give you both a total count for questions closed as duplicates of a given original post, *and* links to all of the ones that haven't been deleted yet.
There is a record of all *linked* questions, both linked from the given question to others and vice versa. You can see the full list by directly browsing to this URL: `https://meta.stackexchange.com/questions/linked/[question id]`

For example: <https://meta.stackexchange.com/questions/linked/194476>

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> ![](https://i.stack.imgur.com/DDt5E.png)
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Questions marked `[duplicate]` may be duplicates of the question having the ID in the URL.

If you're already in a question page there is "Linked" section when there are any linked posts:

> 
> ![](https://i.stack.imgur.com/B2FZS.png)
> 
> 
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And "see more linked questions…" when there are more than 10. (leading to the above page)