Facebook has more than 100 million active users in India

"Facebook, the world's largest social media company, has crossed 100 million active users in India -- the second country, after the United States, in which it has done so. "We crossed the landmark on March 31," Javier Olivan, vice-president, growth & analytics, Facebook, told ET on a video call from its headquarters in Menlo Park, California, on April 7.
The ascent of Facebook in India has been speedy and has been powered by the mobile phone. When the American company set up its first India office in 2010, in Hyderabad, it had 8 million users in the country. Further, according to Facebook, 84 million of its 100 million users in India access the social networking site from their mobile devices.
Facebook, which was set up in 2004, had 1.23 billion users across the world, as of December 31, 2013. "If Facebook continues its current growth trajectory, we can see it as a core communications tool for the world," says Neha Dharia, analyst with UK-based research firm Ovum. "This besides being a media platform where users can share and engage in a range of media such as videos, pictures and games. We expect to see a stronger move around storage (cloud-based) and utility services from Facebook.""
Source:  Economic Times, 8th April 2014