The XL artist, whose recordings are released via Sony's Columbia Records in the States, leads the Billboard 200 albums chart for the year with the record-breaking 21. It had sold 4.8 million copies Stateside up to the end of last week, according to Nielsen SoundScan.
On singles Rolling In The Deep is the year's number one with cumulative US sales at 5.6 million, giving Adele the first singles and albums double by a UK act since George Michael led both markets with the album Faith and its title track 23 years ago.
It is the second year in a row the top album is by a British artist with Susan Boyle's I Dreamed A Dream having led the 2010 rankings.
The end-of-year charts cover the period December 4 2010 to November 26 this year with Taylor Swift's Speak Now the second top album, Lady Gaga's Born This Way third, My Kinda Party by Jason Aldean fourth and Susan Boyle's The Gift claiming fifth place. Other UK interest in the Top 10 comes from Mumford & Sons' whose Sigh No More is eighth.
LMFAO featuring Brit Lauren Bennett & Goonrock's Party Rock Anthem is runner-up to Rolling In The Deep on singles, while two Katy Perry singles make the top five: Firework is third and E.T., featuring Kanye West, fourth. Give Me Everything by Pitbull featuring Ne-Yo. Afrojac& Nayer rounds off the top five.