Popularity in Northern Ireland
Numbers
| Caitlin (feminine) | |||
| Year | Rank | Percent Used | |
| 2023 | - | - | |
| 2022 | - | - | |
| 2021 | - | - | |
| 2020 | - | - | |
| 2019 | #70 | 0.306 | |
| 2018 | #77 | 0.267 | |
| 2017 | #67 | 0.322 | |
| 2016 | #79 | 0.275 | |
| 2015 | #39 | 0.486 | |
| 2014 | #55 | 0.346 | |
| 2013 | #43 | 0.446 | |
| 2012 | #33 | 0.611 | |
| 2011 | #36 | 0.562 | |
| 2010 | #28 | 0.790 | |
| 2009 | #29 | 0.867 | |
| 2008 | #18 | 1.094 | |
| 2007 | #15 | 1.148 | |
| 2006 | #13 | 1.323 | |
| 2005 | #12 | 1.420 | |
| 2004 | #11 | 1.504 | |
| 2003 | #4 | 1.970 | |
| 2002 | #2 | 2.160 | |
| 2001 | #4 | 2.080 | |
| 2000 | #3 | 2.194 | |
| 1999 | #4 | 2.270 | |
| 1998 | #11 | 1.783 | |
| 1997 | #21 | 0.867 | |
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