Popularity in England and Wales
Numbers
| Cillian (masculine) | |||
| Year | Rank | Percent Used | |
| 2022 | #223 | 0.073 | |
| 2021 | #274 | 0.052 | |
| 2020 | #238 | 0.064 | |
| 2019 | #254 | 0.059 | |
| 2018 | #255 | 0.059 | |
| 2017 | #324 | 0.043 | |
| 2016 | #380 | 0.033 | |
| 2015 | #404 | 0.029 | |
| 2014 | #550 | 0.018 | |
| 2013 | #730 | 0.012 | |
| 2012 | #734 | 0.012 | |
| 2011 | #798 | 0.010 | |
| 2010 | #758 | 0.011 | |
| 2009 | #760 | 0.010 | |
| 2008 | #987 | 0.007 | |
| 2007 | #782 | 0.010 | |
| 2006 | - | - | |
| 2005 | - | - | |
| 2004 | - | - | |
| 2003 | - | - | |
| 2002 | - | - | |
| 2001 | - | - | |
| 2000 | - | - | |
| 1999 | - | - | |
| 1998 | - | - | |
| 1997 | - | - | |
| 1996 | - | - | |
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