Twitter today publicly filed its IPO and revealed a bunch of juicy numbers. While the financial analysts will be poring over all the money figures, it’s worth looking at Twitter’s userbase: the company says it has 215 million monthly active users, 100 million daily active users, and sees 500 million tweets per day.

Those are all round numbers, and Twitter only really offers an exact figure for the first metric. The company says it had 218.3 million average monthly active users in the three months ended June 30, 2013, which is a 44 percent increase from the 151.4 million average monthly active users it had in the three months ended June 30, 2012.

twitter users Twitter sees 218m monthly active users, 163.5m monthly mobile users, 100m daily users, and 500m tweets per day

During the same time period, Twitter found 75 percent of that figure accessed the service from a mobile device (phones and tablets). That comes out to 163.5 million monthly active mobile users.

Furthermore, over 65 percent of the company’s advertising revenue was generated from mobile devices. The company expects that “the proportion of active users on, and advertising revenue generated from, mobile devices, will continue to grow in the near term.”

Twitter notes its userbase spans “nearly every country” and most of its users are outside the US: accounts outside the country constituted 77 percent of the social networks’ average monthly active users in the three months ended June 30, 2013. On the other hand, the company says its international revenue (based on the billing location of its advertisers) was only 25 percent of its consolidated revenue in the three months ended June 30, 2013.

These figures and how they change are of course critical to Twitter’s business, as the company admits itself:

The size of our user base and our users’ level of engagement are critical to our success. Our financial performance has been and will continue to be significantly determined by our success in growing the number of users and increasing their overall level of engagement on our platform as well as the number of ad engagements. We anticipate that our user growth rate will slow over time as the size of our user base increases.

Twitter will of course want to grow its number of users in emerging markets. For that, the company needs a huge influx of cash, and hence the company is going public.

Top Image Credit: Scott Beale/Laughing Squid