So how do you gauge the health of an expat community. Is it the number of people, how active they are in keeping traditions alive, or perhaps how high they rank in local government and business. I’m not sure which one is most critical, but I can tell you that any time you start seeing US Mailboxes, you’ve reached critical mass. Well in fact, Bavaria has the largest American expat populations throughout Germany – twice as much as in Berlin and seven times the amount in Hamburg, Germany’s two larger cities. More than 22,000 Americans live in Bavaria, which represents more nearly half of all expats in the region. It also represents 23% of the Americans throughout Germany. Largely attracted by global companies, such as BMW, Siemens, Munich RE; as well as top technology companies – such as IBM, Microsoft, and HP. If you mix that in with the two internationally known Universities, and you have a big American draw to Munich.