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This is a list of songs that have peaked at number-one on the Billboard Hot 100 chart, the preeminent singles chart in the United States. It was created in 1958, and monitors the most popular singles in terms of popular radio play and single purchases.
The following year-by-year, week-by-week listings are based on statistics accrued by Billboard Magazine since before and after the inception of its Hot 100 popularity chart in August 1958.
All data is pooled from record purchases and radio/jukebox play within the United States.
The following sources apply to all "by year" pages linked above: