ZIP Codes not plotting correctly on maps

As per title, ZIP codes in my dataset are not showing correctly in map visual.

Data contains ZIP codes for several EU countries, but when using the ZIP fcolumn as Location field in the map visual, I get several points plotted in the US. I know for a fact that there's no US ZIP codes.

Is there a way to change this behaviour?

Using a hierarchy does not seem to solve this, as I will still get the same behaviour when drilling down to the ZIP code level.