Startup Weekend, whose mission is to kickstart and foster startup communities worldwide through events and networking sessions, had a very lively 2011.

According to internal statistics shared exclusively with TechCrunch, the organization held a total of 260 events in 202 cities, in 67 countries (you can find the obligatory accompanying infographic below).

All in all, the ‘startup weekends’ attracted some 21,316 people, who collectively formed 2,817 teams.

Startups that were incubated at its events raised at least $30 million in outside funding in the course of last year, although Startup Weekend CMO Joey Pomerenke tells me there were probably more fundraising rounds completed that they simply don’t know about yet.

Some of the startups that got funded: Zaarly, Scanadu, LaunchRock, Foodspotting and Cloudbot. Two companies even got acquired: Keepstream and Volly.

One dude (Jon Rossi, organizer of Startup Weekend Denver and Boulder) even got himself a custom tattoo in support of the organization! (see picture on top)

This wasn’t mentioned by them in the retrospective, but it’s noteworthy: Google recently inked a two-year, global agreement with Startup Weekend to help expand its operations.

On that note: Pomerenke says 2012 is poised to become an even more eventful year, with 400+ Startup Weekend events planned so far. There will also be more verticals (see for example Startup Weekend EDU for the education industry) such as health, gaming, media and more.

Pomerenke also comments: