Android is more popular than iPhone in eight US states, with seven of them in the west and midwest, according to stats released by mobile content firm Myxer.
The company has published a map of the US comparing downloads from users on the two platforms, which makes the geographic trend jump out even more.
The company plans to publish the map once a quarter, to track the ongoing growth of Android, and how it's faring against the iPhone.
Myxer has also been digging into Android usage patterns among its customers. It identifies Google's own Nexus One as the 'manliest' Android handset - 75% of registered Myxer users with it are male.