Yelp surged past 100 million unique visitors in January, not counting its 9.4 million mobile app users

Today Yelp announced that in January, the company recorded its first month in which 100 million visited Yelp.com. That figure does not include the 9.4 million unique users of its mobile application, but likely does include mobile Web usage of its service.

For fun, Yelp tallied that its 100 million individual figure is more folks than live in New York City, Chicago, Paris, London, Los Angeles, Milan, Madrid Toronto, Singapore and Berlin combined. That’s an impressive user base. Toss in the mobile app users and you could add another city or two.

Yelp just reported its earnings, beating revenue expectations, while losing more money in the quarter than expected. In that report, Yelp noted that during its past quarter, it had roughly 86 million unique monthly users, a figure that was up 31 percent from the same period in 2011. That puts January’s figure into context: Yelp continues to grow, and by the looks of it, with vigor.

Still, the company isn’t monetizing too strongly on its userbase, to put it frankly. The company anticipates around $210 million in revenue for 2013, or just $2 per each user it had on the Web in January, over a 12-month period. Certainly, if Yelp could find a way to increase its revenue per user, per visit, it would be a great boon to the company.

Yelp has time to figure out how to do so, however, as it currently has just under $100 million in the bank, a chunk of which was derived from its recent IPO.

As a final thought, the company stated in its earnings report that it is currently delivering one-fourth of its local advertisements to local devices. Expect that figure to rise.