Map visual filters

Hi John2, TopoJson is a fromat that allow you to create a custom filled map for PowerBI. You can learn more about it here - Turn Any IMAGE into an INTERACTIVE VISUAL in Power BI - YouTube.

So in a nutshell, PowerBI has a visual called "Filled Map", you can use one of proposed maps to fill interested regions. If a map of your interest is not present there, with TopoJson you can create one. I'm not sure if such trick works for other map visuals... 

Coming back to your example I would ask why do you want to use a map? In case there are only 6 data points, many other visuals (table, for instance) can be more useful and provide necessary insights to your users. Good luck! 🙂