The Billboard 200 is a ranking of the 200 highest-selling music albums and EPs in the United States, published weekly by Billboard magazine. It is frequently used to convey the popularity of an artist or groups of artists. Often, a recording act will be remembered by its "number ones", those of their albums that outsold all others during at least one week.
The chart is based solely on sales (both at retail and digitally) of albums in the United States. The sales tracking week begins on Monday and ends on Sunday. A new chart is published the following Thursday with an issue date of the Saturday of the following week.
Normally new products are released to the American market on Tuesdays. Digital downloads are included in Billboard 200 tabulation, as long as the entire album is purchased as a whole. Albums that are not licensed for retail sale in the United States (yet purchased in the U.S. as imports) are not eligible to chart. A long-standing policy which made titles that are sold exclusively by specific retail outlets (such as Wal-Mart and Starbucks) ineligible for charting, was reversed on November 7, 2007, and took effect in the issue dated November 17.
The current number-one album (as of the issue dated June 1, 2013) on the Billboard 200 is Modern Vampires of the City by Vampire Weekend.
Billboard began an album chart in 1945. Initially only five positions long, the album chart was not published on a weekly basis, sometimes three to seven weeks passing before it was updated. A biweekly (though with a few gaps), 15-position Best-Selling Popular Albums chart appeared in 1955. With the explosion of rock and roll music, Billboard premiered a weekly Best-Selling Popular Albums chart on March 24, 1956. The position count varied anywhere from 10 to 30 albums. The first number-one album on the new weekly list was Belafonte by Harry Belafonte. The chart was renamed to Best-Selling Pop Albums later in 1956, and then to Best-Selling Pop LPs in 1957.