The baby name Dillan appears in baby name data for the United States from 1989 to 2024. It was most popular in 2004 with 344 babies given the name.
In the later years of this period, Dillan has become less common than it once was.
| Year | Count |
|---|---|
| 1989 | 11 |
| 1990 | 15 |
| 1991 | 169 |
| 1992 | 335 |
| 1993 | 273 |
| 1994 | 274 |
| 1995 | 233 |
| 1996 | 218 |
| 1997 | 270 |
| 1998 | 304 |
| 1999 | 269 |
| 2000 | 212 |
| 2001 | 232 |
| 2002 | 222 |
| 2003 | 252 |
| 2004 | 344 |
| 2005 | 261 |
| 2006 | 230 |
| 2007 | 197 |
| 2008 | 243 |
| 2009 | 224 |
| 2010 | 162 |
| 2011 | 158 |
| 2012 | 99 |
| 2013 | 89 |
| 2014 | 101 |
| 2015 | 95 |
| 2016 | 55 |
| 2017 | 11 |
| 2018 | 38 |
| 2019 | 7 |
| 2020 | 8 |
| 2021 | 12 |
| 2023 | 10 |
| 2024 | 7 |