The album 21 Number Ones by Kenny Rogers has been listed for 29 weeks in 4 different charts. Its first appearance was week 6/2006 in the US Albums Top 100 and the last appearance was week 35/2012 in the NZ Albums Top 40. Its peak position was number 7, on the NZ Albums Top 40, it stayed there for 1 week. Its highest entry was number 23 in the Norway Albums Top 40. Below you'll find the exact numbers and statistics.
| 1 | I Can't Unlove You stats: reach: 24/2006 - 28/2006; peak pos: 93; weeks: 5 | 2 | The Gambler stats: reach: 42/2007 - 44/2007; peak pos: 22; weeks: 3 |
| 1 | | 42 Ultimate Hits stats: reach: 25/2004 - 27/2004; peak pos: 39; weeks: 3 |
| 2 | | A Love Song Collection stats: reach: 07/2008 - 08/2008; peak pos: 47; weeks: 2 |
| 3 | | Daytime Friends - The Very Best Of stats: reach: 36/2006 - 21/2009; peak pos: 46; weeks: 11 |
| 4 | | Endless Love stats: reach: 10/2003 - 10/2003; peak pos: 37; weeks: 1 |
| 5 | | Greatest Hits & Love Songs stats: reach: 14/2008 - 18/2013; peak pos: 30; weeks: 10 |
| 6 | Kenny Rogers stats: reach: 33/2008 - 34/2008; peak pos: 60; weeks: 2 | |
| 7 | Once Upon A Christmas (Kenny Rogers and Dolly Parton) stats: reach: 50/2012 - 50/2012; peak pos: 33; weeks: 1 | |
| 8 | | The Essential stats: reach: 50/2010 - 07/2011; peak pos: 58; weeks: 2 |
| 9 | | The Love Of God stats: reach: 12/2011 - 15/2011; peak pos: 27; weeks: 4 |
| 10 | | The Very Best Of stats: reach: 13/2009 - 32/2012; peak pos: 30; weeks: 5 |
| 11 | | Water & Bridges stats: reach: 14/2006 - 45/2006; peak pos: 14; weeks: 9 |
