Google’s data infrastructure is massive and spread across the world. All that Web crawling, indexing, and searching takes enormous amounts of computing power, not to mention everyone pounding away at Gmail, Google Apps, Blogger, Google Reader, and every other project dreamed up at the Googleplex. But where are all of these data centers and how many are there? Google doesn’t really say. But that doesn’t keep people from trying to figure it out. Royal Pingdom has out together this map of all known Google data centers, including spaces it leases and that are under construction. The maps are based on this list compiled by Data Center Knowledge. (And, no, Royal Pingdom didn’t put these on Google Maps).

There are 36 data centers in all—19 in the U.S., 12 in Europe, 3 in Asia, and one each in Russia and South America. Future data center sites may include Taiwan, Malaysia, Lithuania, and Blythewood, South Carolina, where Google has reportedly bought 466 acres of land.

Anyone know how many data centers Microsoft keeps, or Yahoo, or IBM, for that matter?