WordCamp Central lists only WordCamps without a map showing their location.

Yeah, that's definitely something that's missing. We'll be adding it in the future, and most of the code is actually already written, but I've had a couple higher priority projects come up and haven't had time to circle back to it yet. You can follow the progress on Meta #816.

Also, we haven't officially announced it yet, but the JSON API was opened up on WordCamp.org last week, so you could pull in WordCamps automatically. We've customized the output to only whitelist certain data, so I'm gathering feedback about what people what to access before making the announcement. Let me know if you'd like to try integrating the data automatically.

The Events page on make/Community already pulls in WordCamps and official WP meetups, but the WordCamps aren't being listed correctly yet because the API doesn't support filtering by date yet.

That page is really just a prototype though, it'll ultimately be superseded by the Community Hub project, which will provide a map of worldwide events, and a lot more.