So the first port of call is the Australian community. They have a mailing list (talk-au) which appears active enough. Send an email to them to ask. They might

So the first port of call is the Australian community. They have a mailing list (talk-au) which appears active enough. Send an email to them to ask. They might know more about it https://lists.openstreetmap.org/listinfo/talk-au https://lists.openstreetmap.org/listinfo/talk-au If you want to upload a dataset to OSM, be careful! that's called an import, and can be tricky to do. As you've noticed, it's easy to add the wrong data the wrong way. Imports are advanced topics https://wiki.openstreetmap.org/wiki/Import https://wiki.openstreetmap.org/wiki/Import OSM can store all sorts of data, so there might be a need for the "State Suburbs", esp if you want to do statistical work. But you point out that they shouldn't be used for geocoding (address lookups), so maybe those state suburbs are tagged wrong.