The Billboard 200 is a
The chart is based mostly on sales (both at
New product is released to the American market on Fridays.
Beginning with the December 13, 2014 issue, Billboard updated the methodology of their album chart to also include on-demand streaming and digital track sales (as measured by Nielsen SoundScan) by way of a new algorithm, utilizing data from all of the major on-demand audio subscription and
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 increase in
Beginning on May 25, 1959, Billboard split the ranking into two charts Best-Selling Stereophonic LPs for
On August 17, 1963 the stereo and mono charts were combined into a 150-position chart called Top LPs. On April 1, 1967, the chart was expanded to 175 positions, then finally to 200 positions on May 13, 1967. In February 1972, the album chart's title was changed to Top LPs & Tape; in 1984, it was retitled Top 200 Albums; in 1985, it was retitled again to Top Pop Albums; in 1991, it became The Billboard 200 Top Albums; and it was given its current title of The Billboard 200 on March 14, 1992.
In 1960, Billboard began concurrently publishing album charts which ranked sales of older or mid-priced titles. These Essential Inventory charts were divided by stereo and mono albums, and featured titles that had already appeared on the main stereo and mono album charts. Mono albums were moved to the Essential Inventory—Mono chart (25 positions) after spending 40 weeks on the Mono Action Chart, and stereo albums were moved to the Essential Inventory—Stereo chart (20 positions) after 20 weeks on the Stereo Action Chart.
In January 1961, the Action Charts became Action Albums—Monophonic (24 positions), and Action Albums—Stereophonic (15 positions). Albums appeared on either chart for up to nine weeks, then were moved to an Essential Inventory list of approximately 200 titles, with no numerical ranking. This list continued to be published until the consolidated Top LPs chart debuted in 1963.
In 1982, Billboard began publishing a Midline Albums chart (alternatively titled Midline LPs) which ranked older or mid-priced titles. The chart held 50 positions and was published on a bi-weekly (and later tri-weekly) basis.
On May 25, 1991, Billboard premiered the
Starting with the issue dated December 5, 2009, however, the catalog limitations which removed albums over 18 months old, that have dropped below position 100 and have no currently-running single, from the Billboard 200 was lifted, turning the chart into an all-inclusive list of the 200 highest-selling albums in the country (essentially changing
Billboard has adjusted its policies for
In 1983, the Christmas Albums chart was resurrected, but a title's appearance here did not disqualify it from appearing on the Top Pop Albums chart. In 1994 the chart was retitled Top Holiday Albums. As of 2009 the chart holds 50 positions and is run for several weeks during the end-of-calendar-year holiday season. Its current policy allows holiday albums to concurrently chart on the Top Holiday Albums list and the Billboard 200.
Beginning with the December 13, 2014 issue, Billboard updated the methodology of its album chart again, changing from a "pure sales-based ranking" to one measuring "multi-metric consumption".
 With this overhaul, the Billboard 200 includes on-demand streaming and digital track sales (as measured by Nielsen SoundScan) by way of a new algorithm, utilizing data from all of the major on-demand audio subscription services including