According to Pew Internet & American Life Project data, tablet ownership has increased from 11 percent of U.S. adults in July 2011 to 18 percent in January 2012. It is believed by that 25 percent of all U.S. adults have a tablet computer.

Most of the purchases were recent, with 68 percent getting their tablet in the last year, including 32 percent in 2012 alone. iPad ownership has gone down from 81 percent a year ago to just 52 percent, with Android making up the other half; 21 percent own a Kindle Fire, 8 percent the Samsung Galaxy, and then a mix of others.

Android-based devices are changing the tablet market as they did with smartphones; 46 percent of adults have an Android phone, 38 percent have an iPhone and 10 percent have a Blackberry. Among smartphone owners with a tablet, iPad owners are 57 percent likely to have a iPhone while just 32 percent have an Android phone; similarly, 66 percent of those who have an Android tablet have an Android phone while 29 percent have an iPhone.

Source: Journalism.org