Caelin is a rare variant of Cailyn that peaked in 1997 and has since faded.
Caelin is predominantly a girl name. It last appears in U.S. records in 2025. Caelin first appears in 1992 and peaked in 2003 (29 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 5 | 5 | — | #12,345 |
| 2024 | 5 | 5 | #15,716 | — |
| 2022 | 5 | 5 | — | #12,661 |
| 2021 | 5 | 5 | #15,693 | — |
| 2020 | 7 | 7 | — | #9,734 |
| 2019 | 5 | 5 | #15,983 | — |
| 2018 | 7 | 7 | — | #9,836 |
| 2017 | 16 | 16 | #10,852 | #9,854 |
| 2016 | 14 | 14 | #11,048 | #12,493 |
| 2015 | 18 | 18 | #9,595 | #9,724 |
| 2014 | 17 | 17 | #10,283 | #9,801 |
| 2013 | 18 | 18 | #12,197 | #7,617 |
| 2012 | 24 | 24 | #8,298 | #7,636 |
| 2011 | 23 | 23 | #8,283 | #8,177 |
| 2010 | 34 | 34 | #7,276 | #5,284 |
| 2009 | 42 | 42 | #5,571 | #5,359 |
| 2008 | 31 | 31 | #8,614 | #5,283 |
| 2007 | 28 | 28 | #5,121 | — |
| 2006 | 43 | 43 | #5,580 | #4,702 |
| 2005 | 35 | 35 | #5,841 | #5,612 |
| 2004 | 38 | 38 | #5,404 | #5,285 |
| 2003 | 47 | 47 | #4,442 | #4,444 |
| 2002 | 37 | 37 | #5,938 | #4,345 |
| 2001 | 34 | 34 | #4,861 | #6,525 |
| 2000 | 37 | 37 | #5,523 | #4,424 |
| 1999 | 27 | 27 | #6,238 | #5,710 |
| 1998 | 23 | 23 | #7,175 | #5,890 |
| 1997 | 48 | — | #4,020 | #3,364 |
| 1996 | 32 | — | #7,203 | #3,414 |
| 1995 | 29 | — | #6,702 | #3,884 |
| 1994 | 23 | — | #6,024 | #6,445 |
| 1993 | 7 | — | — | #6,910 |
| 1992 | 5 | — | — | #8,590 |