Popularity in England and Wales
Numbers
| Cassidy (feminine) | |||
| Year | Rank | Percent Used | |
| 2022 | #729 | 0.017 | |
| 2021 | #779 | 0.015 | |
| 2020 | #637 | 0.020 | |
| 2019 | #749 | 0.016 | |
| 2018 | #729 | 0.017 | |
| 2017 | #715 | 0.017 | |
| 2016 | #822 | 0.014 | |
| 2015 | #686 | 0.017 | |
| 2014 | #763 | 0.015 | |
| 2013 | #699 | 0.017 | |
| 2012 | #663 | 0.017 | |
| 2011 | #629 | 0.018 | |
| 2010 | #586 | 0.019 | |
| 2009 | #601 | 0.018 | |
| 2008 | #681 | 0.015 | |
| 2007 | #623 | 0.017 | |
| 2006 | #580 | 0.018 | |
| 2005 | #634 | 0.016 | |
| 2004 | #649 | 0.015 | |
| 2003 | #595 | 0.016 | |
| 2002 | #603 | 0.016 | |
| 2001 | #696 | 0.012 | |
| 2000 | #625 | 0.014 | |
| 1999 | #816 | 0.009 | |
| 1998 | #758 | 0.010 | |
| 1997 | #820 | 0.009 | |
| 1996 | - | - | |
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