Facebook has just 1 billion active users. Facebook launched in Mark Zuckerberg’s dorm room at Harvard University 8 years ago. Mark Zuckerberg made that announcement on TODAY. The official data that Facebook hit 1 billion users was on September 14. Facebook hit 1.18 trillion “likes,” 140.4 billion friend connections, 219 billion photos being shared, and 17 billion check-ins. After the music listening app launched in September 2011, around 62.6 million songs have been played 22 billion times. The average Facebook users is 22 years old. Matt Lauer’s interview with Mark Zuckerberg is airing tonight on Rock Center with Brian Williams where the announcement was made.