According to this article (2014), iOS still has a 32.5% market share in the US. I do admit i'm surprised it's still that high in the US. It's not 50/50, but yes, still a contender in the US.
"Android now holds 61.9% of the U.S. market share to Apple’s 32.5%, the lowest percentage iOS has captured since the iPhone 4s launched in 2011."
"Android now holds 61.9% of the U.S. market share to Apple’s 32.5%, the lowest percentage iOS has captured since the iPhone 4s launched in 2011."
source: http://bgr.com/2014/07/01/android-market-share-2014/