The baby name Killian appears in baby name data for the United States from 1989 to 2024. It was most popular in 2017 with 1,940 babies given the name.
In the later years of this period, Killian has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1989 | 11 |
| 1990 | 10 |
| 1991 | 13 |
| 1992 | 16 |
| 1993 | 27 |
| 1994 | 36 |
| 1995 | 66 |
| 1996 | 95 |
| 1997 | 84 |
| 1998 | 94 |
| 1999 | 44 |
| 2000 | 91 |
| 2001 | 68 |
| 2002 | 75 |
| 2003 | 44 |
| 2004 | 97 |
| 2005 | 114 |
| 2006 | 124 |
| 2007 | 187 |
| 2008 | 268 |
| 2009 | 273 |
| 2010 | 261 |
| 2011 | 291 |
| 2012 | 267 |
| 2013 | 303 |
| 2014 | 617 |
| 2015 | 1,282 |
| 2016 | 1,854 |
| 2017 | 1,940 |
| 2018 | 1,585 |
| 2019 | 1,366 |
| 2020 | 982 |
| 2021 | 1,098 |
| 2022 | 1,029 |
| 2023 | 987 |
| 2024 | 1,001 |