UPDATE: I'm in contact with a provider here in Adelaide who is going to send me a file of lat/long for SA. Once I have it, I'll post it for you to use if required.
Do you mean the centroid or the polygon ?
I'd also email Tableau and see if they can add them in.
This file has Goolwa, but not Renown Park : Australian Latitude and Longitude from Postcode – Radioactive Networks
Hi Chris, I believe I'm being sent the centroid information. I'm new to the mapping terminology, so I'm hoping this is what I need. Great idea suggesting I email Tableau the file I receive. I shall do that and again, post the outcome whether accepted or not. Unfortunately I am unable to import my own Geocodes as the file must not sit on a network drive/path, but our permissions to the C drive were removed a while back. The end result is I've asked for permissions, but it will help in the future if Tableau can just continually add to their source.
Thanks for the link. I will wait for my contact to come through, but if that fails I will look at your link. If I'm importing my own lat/long, then I can add Renown Park to the list anyway.