The baby name Kailyn appears in baby name data for the United States from 1986 to 2024. It was most popular in 2011 with 929 babies given the name.
In the later years of this period, Kailyn has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1986 | 11 |
| 1987 | 18 |
| 1988 | 44 |
| 1989 | 59 |
| 1990 | 56 |
| 1991 | 100 |
| 1992 | 124 |
| 1993 | 187 |
| 1994 | 222 |
| 1995 | 208 |
| 1996 | 322 |
| 1997 | 350 |
| 1998 | 374 |
| 1999 | 374 |
| 2000 | 407 |
| 2001 | 472 |
| 2002 | 389 |
| 2003 | 535 |
| 2004 | 635 |
| 2005 | 752 |
| 2006 | 749 |
| 2007 | 799 |
| 2008 | 798 |
| 2009 | 759 |
| 2010 | 722 |
| 2011 | 929 |
| 2012 | 771 |
| 2013 | 645 |
| 2014 | 589 |
| 2015 | 498 |
| 2016 | 364 |
| 2017 | 364 |
| 2018 | 240 |
| 2019 | 246 |
| 2020 | 153 |
| 2021 | 174 |
| 2022 | 143 |
| 2023 | 124 |
| 2024 | 107 |