I tried to simulate your requirement with the sample data that comes with Tableau. I know it is not exactly the same in your case, but hope it may help you in your quest. Have a look in the attachement!
Book2.twbx.zip 162.7 KB
Thanks for having a look at this issue for me. I cant see it working in the attachment...can you explain.
The basic idea is that I have one field called [Show filter] defined like that:
if window_max(index()) < 6 then 0 else 1 end
This is on the filer shelf in the table with the "results" data, and is filtered to show only 1, i.e. if you have more than 6 items in the set.
The map only controls the details sheet via a filter action set to exclude all values upon removing th selection. Thus when nothing is selected on the map, nothing is shown as "results" data. If you select less than 6 zip codes, then still due to the [Show filter] nothing will appear. If you select more than 6, then you will see th second sheet with the results.
I see now that hovering over a data point brings some datain the tooltip. You can also remove tooltips at all, so that these do not compromise confidentiality. Do it from the Worksheet-Tooltip... menu.
Hope this helps!