TheNameDBCillian
M FCillian is a given name used predominantly for boys. There have been 3,492 people born with this name in the United States since 1880 — 3,486 as boys and 6 as girls. Cillian gained popularity in the 2010s, peaked in 2024.
Popularity Over Time
Yearly Data
| Year | Births |
|---|---|
| 2024 | 674 |
| 2023 | 476 |
| 2022 | 352 |
| 2021 | 340 |
| 2020 | 228 |
| 2019 | 186 |
| 2018 | 193 |
| 2017 | 170 |
| 2016 | 177 |
| 2015 | 121 |
| 2014 | 87 |
| 2013 | 77 |
| 2012 | 73 |
| 2011 | 66 |
| 2010 | 54 |
| 2009 | 52 |
| 2008 | 51 |
| 2007 | 39 |
| 2006 | 42 |
| 2005 | 10 |
| 2004 | 8 |
| 2001 | 6 |
| 1999 | 5 |
| 1995 | 5 |