Hi Sai,
Are you using Power BI? For assistance on how their connection works to link your data to a location, you will need to leverage the Fabric Forums. For Azure Maps, try https://samples.azuremaps.com/services-module/search-for-boundaries and type "NSW" and you will get a polygon for that Admin district. I don't think we have a method of disambiguating incorporated vs unincorporated.
This is the shape our Azure Maps service returns. If this is not what you are getting in Power BI, you will have to follow up with them as previously noted. (https://community.fabric.microsoft.com/t5/Power-BI-forums/ct-p/powerbi)
Sincerely,
IoTGirl