According to new data released by Nielsen on Tuesday, Android’s market share has hit a plateau in the United States. Android remains the most popular operating system — ahead of iOS and BlackBerry OS, and Windows Mobile — with a 36% share of the market. However, that figure is on a par with the 37% share it had in Nielsen’s last report, released in April, when the operating system made a 22% leap over the study released in June 2010. Nielsen also found that 26% of U.S. mobile users own an iPhone, 23% carry a BlackBerry, 9% use Windows Mobile, 2% carry HP webOS devices, 2% have a Symbian-powered phone, and just 1% have a Windows Phone 7 device. Android users devour the most data, too, downloading an average of 582MB of data each month, compared to the 492MB of data that iOS users download and the 448MB of data HP webOS users consume. Hit the jump for a two more charts reflecting data from Nielsen’s report.