It's official: Foursquare has 5 million users, increasing its user base by a factor of 10 in just nine months.
The revelation was made by Foursquare co-founder and CEO Dennis Crowley on the stage of the LeWeb Conference in Paris. He noted that the geosocial service surpassed the 5 million mark late last week.
Compare that milestone to March of this year. At SXSW 2010, the company announced it had more than half a million users. In April, it surpassed 1 million and has been on fire ever since. Now the company has 5 million users, more than 10 times it had in March.
Early last week it was reported that Foursquare had surpassed the 5 million user mark. Those reports were based on Foursquare having more than 5 million user IDs, not actual users though. Here's what Foursquare told us about the matter:
"Though there are over 5 million user IDs in the foursquare community, our user IDs don't necessarily match up to our actual number of user accounts. That said, we do expect to hit 5 million next week."