Firefox Facts and Statistics (2021) | By the Numbers

Firefox Facts and Statistics

Here are a few of the most interesting Firefox facts and statistics I was able to dig up. As always, be sure to check back in the future as I will be updating this post as new and updated stats become available.

Firefox Facts and Statistics

Please note that some of these Firefox facts are easier to find than others, so some of these are based on news reports and not official company tallies. All stats are linked to their source unless it was sent to me directly from the company. No stat listed on DMR should be considered in making any type of investment decision. In other words: This is the best I can find, but I don't guarantee anything.

Firefox Facts

  • Year Launched: 1998
  • Creators: Dave Hyatt, Joe Hewitt, and Blake Ross
  • Developer: Mozilla
  • Headquarters: Mountain View, Ca

Firefox Statistics

How many people use Firefox?

250 million monthly users

Last updated 8/30/18

Number of Firefox installs:

253 million

Last updated 1/15/20

Number of times Firefox Focus for Android has been downloaded:

1 million

Last updated 7/20/17

Firefox's share of the worldwide internet browser market:


Last updated 5/1/15

Number of Firefox for Android downloads:

100 million

Last updated 4/9/15

Percentage of the Firefox code that is written by volunteers:

approx 40%

Last updated 8/8/15

Number of languages Firefox is available in:

89 languages

Last updated 8/8/15

Percentage of Firefox users that use the non-English versions:

more than 50%

Last updated 8/8/15

Number of Firefox employees:

about 1,000

Last updated 1/15/20