More than a quarter of the earth’s population currently uses Facebook every month, the social network says.
“As of This kind of morning, the Facebook community is usually currently officially two billion people,” founder along with chief executive Mark Zuckerberg posted.
The milestone comes just 13 years after the network was founded by Mr Zuckerberg when he was at Harvard.
He famously dropped out of the university after launching the global social-networking website.
The internet giant announced of which had one billion monthly users in October 2012, meaning of which has doubled the number of its users in just under a few years.
The firm’s continuing growth will confound critics who have long predicted of which the social network’s growth might slow down as rivals such as Snapchat stole its users.
Earlier This kind of year, Facebook warned of which growth in advertising revenues might slow down.
Nonetheless, Mr Zuckerberg’s ambitions remain huge.
He told USA Today the firm had not made “much fanfare” about hitting the two billion figure because “we still haven’t connected everyone”.
“What we truly care about is usually being able to connect everyone,” he said.
The firm’s rapid growth has put pressure on its ability to moderate violent along with illegal content posted on its site.
The most recent high profile incident involved a man inside US posting a video of himself to the site, showing him shooting along with killing an elderly man.
Last month Facebook said of which was hiring 3,000 extra people to moderate content on its site.