Kailynn is an uncommon variant of Kaelyn that peaked in 2011 and has grown less common since.
Kailynn is predominantly a girl name. In 2025 it ranked #2,343 for girl births in the United States (and #4,212 across all names), given to 78 babies. Kailynn was first reported in SSA data in 1985 and peaked in 2011 (290 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 78 | 78 | #2,343 | — |
| 2024 | 95 | 95 | #2,047 | — |
| 2023 | 109 | 109 | #1,953 | #9,342 |
| 2022 | 112 | 112 | #1,910 | #10,320 |
| 2021 | 122 | 122 | #1,703 | — |
| 2020 | 129 | 129 | #1,620 | — |
| 2019 | 122 | 122 | #1,712 | — |
| 2018 | 154 | 154 | #1,437 | — |
| 2017 | 159 | 159 | #1,432 | — |
| 2016 | 184 | 184 | #1,303 | — |
| 2015 | 226 | 226 | #1,128 | — |
| 2014 | 258 | 258 | #1,014 | — |
| 2013 | 235 | 235 | #1,060 | — |
| 2012 | 271 | 271 | #943 | — |
| 2011 | 290 | 290 | #899 | — |
| 2010 | 230 | 230 | #1,084 | — |
| 2009 | 247 | 247 | #1,050 | — |
| 2008 | 226 | 226 | #1,141 | — |
| 2007 | 209 | 209 | #1,204 | — |
| 2006 | 150 | 150 | #1,476 | — |
| 2005 | 132 | 132 | #1,550 | — |
| 2004 | 125 | 125 | #1,581 | — |
| 2003 | 113 | 113 | #1,694 | — |
| 2002 | 98 | 98 | #1,831 | — |
| 2001 | 89 | 89 | #1,947 | — |
| 2000 | 90 | 90 | #1,893 | — |
| 1999 | 80 | 80 | #1,969 | — |
| 1998 | 68 | 68 | #2,137 | — |
| 1997 | 49 | — | #2,604 | — |
| 1996 | 57 | — | #2,327 | — |
| 1995 | 56 | — | #2,355 | — |
| 1994 | 39 | — | #3,009 | — |
| 1993 | 36 | — | #3,186 | — |
| 1992 | 26 | — | #4,015 | — |
| 1991 | 15 | — | #6,078 | — |
| 1990 | 19 | — | #4,948 | — |
| 1989 | 20 | — | #4,574 | — |
| 1988 | 6 | — | #10,982 | — |
| 1987 | 10 | — | #7,020 | — |
| 1986 | 6 | — | #10,092 | — |
| 1985 | 7 | — | #8,728 | — |