Popularity in England and Wales
Numbers
| Niamh (feminine) | |||
| Year | Rank | Percent Used | |
| 2022 | #169 | 0.102 | |
| 2021 | #136 | 0.119 | |
| 2020 | #136 | 0.122 | |
| 2019 | #131 | 0.124 | |
| 2018 | #128 | 0.127 | |
| 2017 | #111 | 0.149 | |
| 2016 | #109 | 0.155 | |
| 2015 | #109 | 0.155 | |
| 2014 | #103 | 0.164 | |
| 2013 | #90 | 0.175 | |
| 2012 | #84 | 0.189 | |
| 2011 | #81 | 0.208 | |
| 2010 | #78 | 0.221 | |
| 2009 | #76 | 0.239 | |
| 2008 | #70 | 0.277 | |
| 2007 | #69 | 0.269 | |
| 2006 | #63 | 0.285 | |
| 2005 | #50 | 0.352 | |
| 2004 | #48 | 0.378 | |
| 2003 | #56 | 0.327 | |
| 2002 | #54 | 0.330 | |
| 2001 | #49 | 0.361 | |
| 2000 | #40 | 0.408 | |
| 1999 | #47 | 0.395 | |
| 1998 | #66 | 0.270 | |
| 1997 | #86 | 0.189 | |
| 1996 | #120 | 0.121 | |
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