Cillian Popularity
See the full name profile on the Cillian page.
among boys in England and Wales · 1996–2025
View as table
| Year | Rank |
|---|---|
| 1996 | #1104 |
| 1997 | #2337 |
| 1998 | #2901 |
| 1999 | #2943 |
| 2000 | #2142 |
| 2001 | #1746 |
| 2002 | #2254 |
| 2003 | #1962 |
| 2004 | #3009 |
| 2005 | #1190 |
| 2006 | #1084 |
| 2007 | #782 |
| 2008 | #987 |
| 2009 | #760 |
| 2010 | #758 |
| 2011 | #798 |
| 2012 | #734 |
| 2013 | #730 |
| 2014 | #550 |
| 2015 | #404 |
| 2016 | #380 |
| 2017 | #324 |
| 2018 | #255 |
| 2019 | #254 |
| 2020 | #238 |
| 2021 | #274 |
| 2022 | #223 |
| 2023 | #204 |
| 2024 | #177 |
| 2025 | #217 |
VerifiedSource: Office for National Statistics — Baby Names in England and Wales.Confidence: high.
See all England and Wales names · Source: Office for National Statistics — Baby Names in England and Wales
What the data shows
Recorded in official data among boys in Republic of Ireland in 55 of the 56 years from 1970 to 2025.
In 2025: #9 among boys in Republic of Ireland, #217 among boys in England and Wales.
Official data from 4 national registrars across 4 regions, 1970–2025 · Office for National Statistics. Data sources
Popularity journey
First recorded1970
First recorded at #305 among boys in Republic of Ireland in 1970 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1997–2024
Highest recorded position: #2 among boys in Northern Ireland, in 2024 (recorded 1997–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #217 among boys in England and Wales, in 2025.
England and Wales · Boys
Popularity data
Official popularity data is available for 4 regions, from 1970 to 2025. Highest recorded position: #2 in Northern Ireland in 2024.
| Year | Region | Category | Rank | Births registered | Confidence | Status |
|---|---|---|---|---|---|---|
| 2025 | England and Wales | male | #217 | 230 | High | Verified |
| 2024 | England and Wales | male | #177 | 285 | High | Verified |
| 2023 | England and Wales | male | #204 | 241 | High | Verified |
| 2022 | England and Wales | male | #223 | 227 | High | Verified |
| 2021 | England and Wales | male | #274 | 168 | High | Verified |
| 2020 | England and Wales | male | #238 | 202 | High | Verified |
| 2019 | England and Wales | male | #254 | 193 | High | Verified |
| 2018 | England and Wales | male | #255 | 199 | High | Verified |
| 2017 | England and Wales | male | #324 | 151 | High | Verified |
| 2016 | England and Wales | male | #380 | 119 | High | Verified |
| 2015 | England and Wales | male | #404 | 104 | High | Verified |
| 2014 | England and Wales | male | #550 | 66 | High | Verified |
| 2013 | England and Wales | male | #730 | 44 | High | Verified |
| 2012 | England and Wales | male | #734 | 45 | High | Verified |
| 2011 | England and Wales | male | #798 | 38 | High | Verified |
| 2010 | England and Wales | male | #758 | 39 | High | Verified |
| 2009 | England and Wales | male | #760 | 38 | High | Verified |
| 2008 | England and Wales | male | #987 | 26 | High | Verified |
| 2007 | England and Wales | male | #782 | 34 | High | Verified |
| 2006 | England and Wales | male | #1084 | 20 | High | Verified |
| 2005 | England and Wales | male | #1190 | 17 | High | Verified |
| 2004 | England and Wales | male | #3009 | 4 | High | Verified |
| 2003 | England and Wales | male | #1962 | 7 | High | Verified |
| 2002 | England and Wales | male | #2254 | 5 | High | Verified |
| 2001 | England and Wales | male | #1746 | 7 | High | Verified |
| 2000 | England and Wales | male | #2142 | 5 | High | Verified |
| 1999 | England and Wales | male | #2943 | 3 | High | Verified |
| 1998 | England and Wales | male | #2901 | 3 | High | Verified |
| 1997 | England and Wales | male | #2337 | 4 | High | Verified |
| 1996 | England and Wales | male | #1104 | 12 | High | Verified |
| 2024 | Northern Ireland | male | #2 | 142 | High | Verified |
| 2023 | Northern Ireland | male | #4 | 128 | High | Verified |
| 2022 | Northern Ireland | male | #9 | 111 | High | Verified |
| 2021 | Northern Ireland | male | #8 | 116 | High | Verified |
| 2020 | Northern Ireland | male | #9 | 111 | High | Verified |
| 2019 | Northern Ireland | male | #14 | 104 | High | Verified |
| 2018 | Northern Ireland | male | #13 | 117 | High | Verified |
| 2017 | Northern Ireland | male | #15 | 109 | High | Verified |
| 2016 | Northern Ireland | male | #31 | 79 | High | Verified |
| 2015 | Northern Ireland | male | #25 | 88 | High | Verified |
| 2014 | Northern Ireland | male | #48 | 63 | High | Verified |
| 2013 | Northern Ireland | male | #46 | 64 | High | Verified |
| 2012 | Northern Ireland | male | #60 | 55 | High | Verified |
| 2011 | Northern Ireland | male | #66 | 52 | High | Verified |
| 2010 | Northern Ireland | male | #62 | 54 | High | Verified |
| 2009 | Northern Ireland | male | #83 | 40 | High | Verified |
| 2008 | Northern Ireland | male | #98 | 34 | High | Verified |
| 2007 | Northern Ireland | male | #79 | 40 | High | Verified |
| 2006 | Northern Ireland | male | #110 | 25 | High | Verified |
| 2005 | Northern Ireland | male | #178 | 11 | High | Verified |
| 2004 | Northern Ireland | male | #175 | 10 | High | Verified |
| 2003 | Northern Ireland | male | #193 | 8 | High | Verified |
| 2002 | Northern Ireland | male | #243 | 4 | High | Verified |
| 2001 | Northern Ireland | male | #218 | 5 | High | Verified |
| 2000 | Northern Ireland | male | #189 | 7 | High | Verified |
| 1999 | Northern Ireland | male | #220 | 5 | High | Verified |
| 1998 | Northern Ireland | male | #172 | 9 | High | Verified |
| 1997 | Northern Ireland | male | #179 | 8 | High | Verified |
| 2025 | Republic of Ireland | male | #9 | 271 | High | Verified |
| 2024 | Republic of Ireland | male | #4 | 352 | High | Verified |
| 2023 | Republic of Ireland | male | #9 | 275 | High | Verified |
| 2022 | Republic of Ireland | male | #9 | 316 | High | Verified |
| 2021 | Republic of Ireland | male | #9 | 322 | High | Verified |
| 2020 | Republic of Ireland | male | #11 | 302 | High | Verified |
| 2019 | Republic of Ireland | male | #17 | 289 | High | Verified |
| 2018 | Republic of Ireland | male | #17 | 289 | High | Verified |
| 2017 | Republic of Ireland | male | #16 | 302 | High | Verified |
| 2016 | Republic of Ireland | male | #22 | 298 | High | Verified |
| 2015 | Republic of Ireland | male | #22 | 299 | High | Verified |
| 2014 | Republic of Ireland | male | #20 | 350 | High | Verified |
| 2013 | Republic of Ireland | male | #23 | 322 | High | Verified |
| 2012 | Republic of Ireland | male | #23 | 341 | High | Verified |
| 2011 | Republic of Ireland | male | #22 | 360 | High | Verified |
| 2010 | Republic of Ireland | male | #21 | 351 | High | Verified |
| 2009 | Republic of Ireland | male | #21 | 346 | High | Verified |
| 2008 | Republic of Ireland | male | #23 | 350 | High | Verified |
| 2007 | Republic of Ireland | male | #22 | 377 | High | Verified |
| 2006 | Republic of Ireland | male | #28 | 300 | High | Verified |
| 2005 | Republic of Ireland | male | #45 | 167 | High | Verified |
| 2004 | Republic of Ireland | male | #40 | 176 | High | Verified |
| 2003 | Republic of Ireland | male | #60 | 116 | High | Verified |
| 2002 | Republic of Ireland | male | #66 | 99 | High | Verified |
| 2001 | Republic of Ireland | male | #58 | 114 | High | Verified |
| 2000 | Republic of Ireland | male | #59 | 111 | High | Verified |
| 1999 | Republic of Ireland | male | #61 | 98 | High | Verified |
| 1998 | Republic of Ireland | male | #60 | 92 | High | Verified |
| 1997 | Republic of Ireland | male | #72 | 101 | High | Verified |
| 1996 | Republic of Ireland | male | #70 | 102 | High | Verified |
| 1995 | Republic of Ireland | male | #89 | 61 | High | Verified |
| 1994 | Republic of Ireland | male | #90 | 60 | High | Verified |
| 1993 | Republic of Ireland | male | #90 | 66 | High | Verified |
| 1992 | Republic of Ireland | male | #84 | 71 | High | Verified |
| 1991 | Republic of Ireland | male | #100 | 54 | High | Verified |
| 1990 | Republic of Ireland | male | #100 | 52 | High | Verified |
| 1989 | Republic of Ireland | male | #107 | 44 | High | Verified |
| 1988 | Republic of Ireland | male | #120 | 37 | High | Verified |
| 1987 | Republic of Ireland | male | #110 | 42 | High | Verified |
| 1986 | Republic of Ireland | male | #125 | 33 | High | Verified |
| 1985 | Republic of Ireland | male | #135 | 28 | High | Verified |
| 1984 | Republic of Ireland | male | #148 | 22 | High | Verified |
| 1983 | Republic of Ireland | male | #132 | 31 | High | Verified |
| 1982 | Republic of Ireland | male | #124 | 39 | High | Verified |
| 1981 | Republic of Ireland | male | #165 | 19 | High | Verified |
| 1980 | Republic of Ireland | male | #166 | 19 | High | Verified |
| 1979 | Republic of Ireland | male | #172 | 16 | High | Verified |
| 1978 | Republic of Ireland | male | #188 | 12 | High | Verified |
| 1977 | Republic of Ireland | male | #220 | 9 | High | Verified |
| 1976 | Republic of Ireland | male | #203 | 11 | High | Verified |
| 1975 | Republic of Ireland | male | #251 | 6 | High | Verified |
| 1974 | Republic of Ireland | male | #203 | 11 | High | Verified |
| 1973 | Republic of Ireland | male | #290 | 4 | High | Verified |
| 1972 | Republic of Ireland | male | #207 | 9 | High | Verified |
| 1970 | Republic of Ireland | male | #305 | 3 | High | Verified |
| 2024 | Scotland | male | #83 | 62 | High | Verified |
- England and Wales hub — collected by Office for National Statistics
- Northern Ireland hub — collected by NISRA
- Republic of Ireland hub — collected by CSO Ireland
- Scotland hub — collected by National Records of Scotland
See methodology and data sources for how popularity data is collected and what "confidence" means.