Although the growth of Firefox has stagnated a bit lately due to the increasing competition from rival browsers, it’s still one of the largest success tales in the history of the Internet and has the second-largest user base of any web browser.
Firefox has a widespread global user base, but we wanted to find out where it is most common, or another way of looking at it: how are the Firefox users distributed?
Luckily for the curious, Mozilla has a page that shows continuously updated download stats for the latest major version of Firefox. This is currently Firefox 3.6, which went live on January 21 this year. All numbers in this article are therefore for Firefox 3.6.
We didn’t just examine where Firefox has the most downloads, we also took some time to calculate the relative popularity of Firefox in these countries. (Because we could.)
Before we head on to the charts, here is a concise summary of what we found out.
The data was collected this Monday. We thought that was worth mentioning since it’s a moving target as downloads keep ticking.
It’s vital to note that download numbers will not be equal to user numbers (those are not available). That said, the download numbers will give us a very excellent suggestion of where Firefox is used the most.

As you can see, the United States and Germany are way ahead of the additional countries when it comes to downloads. One reason for this is that these countries have very large Internet populations. The United States has 239 million Internet users, and Germany has 65 million. As you will see here not more than, though, Firefox is much more well loved in Germany than it is in the Unites States.
If you take the number of Internet users per public into account, you can find out the relative popularity of Firefox in each public.
We essentially looked at downloads per Internet user, but to make the numbers a bit simpler to digest, the chart shows how many Firefox 3.6 downloads there have been for every 1,000 Internet users each public has. The higher the number, the more well loved Firefox is. We only included countries that have more than 1 million Firefox downloads, just like in the previous chart.

So, although the United States accounts for the highest number of Firefox downloads by far, when you take its size into significance, the actual penetration is much lower than in many additional countries. If Firefox were as well loved in the United States as it is in Finland, US downloads would have more than tripled.
Since we looked at the latest version of Firefox, what you see in this article is an up-to-date view of which countries are the huge Firefox users of the world right now. We hope you found this small study fascinating.
And a small side note… It would have been very cool to be able to compare download numbers for all the different web browsers that exist out there, but unfortunately not everyone is quite as open as Mozilla in this area these things. Are you reading this, Google, Microsoft and Apple…?
Data source: Firefox download numbers from Mozilla.

From:
The popularity of Firefox around the world