Facebook says it now has 1.11 billion people using the site each month, slightly more than the 1.06 billion reported three months earlier. It represents a 23 percent growth from a year earlier.
The figure is as of March 31 and was disclosed Wednesday in Facebook's quarterly earnings report.
Facebook also says it had 665 million active users each day on average in March, up 26 percent from a year earlier, and 751 million using Facebook from a mobile device each month, up 54 percent.
In addition, Facebook says it had 751 million monthly active mobile users in the first quarter, up 10 percent from 680 million in the fourth quarter of 2012.
Here is a look at how the number of active users at Facebook has grown:
1 million — End of 2004.
5.5 million — End of 2005.
12 million — End of 2006.
20 million — April 2007.
50 million — October 2007.
100 million — August 2008.
150 million — January 2009.
175 million — February 2009.
200 million — April 2009.
250 million — July 2009.
300 million — September 2009.
350 million — End of 2009.
400 million — February 2010.
500 million — July 2010.
608 million — End of 2010.
750 million — July 2011.
800 million — September 2011.
845 million — End of 2011.
901 million — March 2012.
955 million — June 2012.
1.01 billion — September 2012.
1.06 billion — December 2012.
1.11 billion — March 2013.
Source: Facebook Inc.