Which country has the highest market share for Mac? From TUAW:
The official Pingdom blog did a little research into Mac market share around the world according to Statcounter (all based on browser visits to a pretty solid sample of three million websites), and it turns out that Switzerland is the most Mac country in the world. OS X has a 17.61% market share there, making it the country with the highest share on the planet.
The US comes in at #3, just ahead of Iceland.