Is Cailyn a boy or girl name?
Cailyn is a girl name in the US. In 2024, 48 girls and 0 boys were named Cailyn, so 100% were girls. Across 1880–2024, 100% of the 5,509 US babies named Cailyn were girls.
- Boy rank, 2024
- Not ranked
- Girl rank, 2024
- #3,278
- Babies named Cailyn since 1979
- 5,509
- Most popular year
- 2009
- 401 babies
Boys and girls named Cailyn, by decade
| Decade | Boys | Girls | Share girls |
|---|---|---|---|
| 1970s | 0 | 5 | 100% |
| 1980s | 0 | 120 | 100% |
| 1990s | 0 | 857 | 100% |
| 2000s | 0 | 2,445 | 100% |
| 2010s | 0 | 1,791 | 100% |
| 2020s | 0 | 291 | 100% |
Every year
| Year | Boys | Boy rank | Girls | Girl rank |
|---|---|---|---|---|
| 2024 | 0 | – | 48 | #3,278 |
| 2023 | 0 | – | 53 | #3,101 |
| 2022 | 0 | – | 65 | #2,662 |
| 2021 | 0 | – | 55 | #3,009 |
| 2020 | 0 | – | 70 | #2,473 |
| 2019 | 0 | – | 70 | #2,513 |
| 2018 | 0 | – | 67 | #2,587 |
| 2017 | 0 | – | 87 | #2,185 |
| 2016 | 0 | – | 114 | #1,818 |
| 2015 | 0 | – | 177 | #1,337 |
| 2014 | 0 | – | 178 | #1,328 |
| 2013 | 0 | – | 219 | #1,111 |
| 2012 | 0 | – | 256 | #985 |
| 2011 | 0 | – | 301 | #869 |
| 2010 | 0 | – | 322 | #836 |
| 2009 | 0 | – | 401 | #723 |
| 2008 | 0 | – | 399 | #742 |
| 2007 | 0 | – | 276 | #974 |
| 2006 | 0 | – | 306 | #870 |
| 2005 | 0 | – | 209 | #1,125 |
| 2004 | 0 | – | 206 | #1,107 |
| 2003 | 0 | – | 186 | #1,161 |
| 2002 | 0 | – | 172 | #1,189 |
| 2001 | 0 | – | 127 | #1,477 |
| 2000 | 0 | – | 163 | #1,219 |
| 1999 | 0 | – | 151 | #1,245 |
| 1998 | 0 | – | 157 | #1,185 |
| 1997 | 0 | – | 129 | #1,336 |
| 1996 | 0 | – | 94 | #1,626 |
| 1995 | 0 | – | 88 | #1,674 |
| 1994 | 0 | – | 77 | #1,841 |
| 1993 | 0 | – | 53 | #2,385 |
| 1992 | 0 | – | 41 | #2,876 |
| 1991 | 0 | – | 23 | #4,356 |
| 1990 | 0 | – | 44 | #2,649 |
| 1989 | 0 | – | 25 | #3,908 |
| 1988 | 0 | – | 27 | #3,493 |
| 1987 | 0 | – | 13 | #5,639 |
| 1986 | 0 | – | 11 | #6,215 |
| 1985 | 0 | – | 18 | #4,299 |
| 1984 | 0 | – | 11 | #5,944 |
| 1983 | 0 | – | 8 | #7,397 |
| 1982 | 0 | – | 7 | #8,336 |
| 1981 | 0 | – | 0 | – |
| 1980 | 0 | – | 0 | – |
| 1979 | 0 | – | 5 | #10,394 |
Highest rank
Cailyn has never been ranked as a boy name. As a girl name, it reached #723 in 2009. Ranks count every name SSA published for that year and sex, so they go well past the top 1,000.
Names from the same era
These names were also most popular in the 2000s, with a similar number of babies. They can work as sibling or middle names that feel like they belong together.
Names spelled like Cailyn
Source: US Social Security Administration baby name data, 1880–2024. Counts are Social Security card applications for US births; SSA leaves out names given to fewer than 5 babies in a year. Updated 2026-10-05. How these numbers are made.