June 2009 Mobile Metrics Report from AdMob
AdMob published it's June report, showing detailed statistics about smartphone market. As for iPhone 54% of iPhone OS devices are currently in the US; however, this number has slowly declined from 61% in the last six months, implying that international users are growing faster than those in the US. Following the US, the United Kingdom, Germany, and France each have over 5% of users. As a region, Western Europe has a 26% share of iPhone and iPod touch users.
Based on Apple guidance, the company has shipped 26.4 million iPhones and approximately 18.6 million iPod touches to date.
Here is a table, that shows the number of iPhones by country:
Here's some interesting statistics about smartphone traffic. Sounds like Apple is looking quite good in both the US and the rest of the world:
You can take a look at this report