Nielsen SoundScan, which tracks the nation's album sales, says Swift's "Fearless" sold 3.2 million copies last year. It was released in late 2008. Boyle's "I Dreamed a Dream" sold 3.1 million copies - and it only came out in late November.
Michael Jackson's "Number Ones" was No. 3 with 2.3 million sold. "The Fame" by Lady Gaga was No. 4 with 2.2 million copies and Andrea Bocelli's "My Christmas" also sold about 2.2 million copies to come in at No. 5.
Jackson was the year's top-selling artist, selling 8.2 million records to Swift's 4.6 million.
Music sales overall were up 2.1 percent from 2008, but album sales continued their decline, down 12.7 percent.