Backstreet Boys were most popular in the late 1990s and very early 2000s, with their absolute peak around 1998–2000.

Peak popularity years

  • The group broke through internationally with the albums Backstreet Boys (1996) and Backstreet’s Back (1997), which sold multiple millions and led to sold‑out tours.
  • Their peak came with Millennium (1999) and Black & Blue (2000), when they were one of the biggest pop acts in the world and heavily present on TV, radio, and teen magazines.

How big they were

  • Around 1999, Millennium alone sold well over 20 million copies worldwide, marking the height of their commercial success.
  • Fans and commentators often describe them as one of the dominant pop acts of that era, with a level of ubiquity where songs like “I Want It That Way” were almost impossible to avoid hearing.

After the initial wave

  • Their mainstream dominance faded in the early 2000s as pop trends shifted and audiences aged, though they kept a strong core fan base.
  • They later regrouped for tours and new albums, functioning more as a legacy act with nostalgia-driven popularity rather than chart-topping dominance.

Information gathered from public forums or data available on the internet and portrayed here.