Azure Map filled postal codes (layered?) issue

Hi,ddk 

Regarding the issue you raised, my solution is as follows:

1.First I have created the following table and the column names and data are the data you have given:

I populate the azure map view with the corresponding values:

And change the corresponding area code to the color you set:

Here are the best results from my practice:

2.I suggest you also try ArcGIS maps, here are the links to the relevant documentation:

Create an ArcGIS map in Power BI - Power BI | Microsoft Learn

3.Here is a link to the relevant document, hope it helps:

Azure Maps Documentation | Microsoft Learn

Get started with Azure Maps Power BI visual - Microsoft Azure Maps | Microsoft Learn 

Best Regards,

Leroy Lu

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.