Kellyn is an uncommon name used for both girls and boys that peaked in 1985 and has since faded.
Kellyn is predominantly a girl name. In 2025 it ranked #11,426 among girls (8) and #13,006 among boys (5) — overall #13,937 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 13 | 13 | #11,426 | #13,006 |
| 2024 | 22 | 22 | #6,805 | #13,309 |
| 2023 | 24 | 24 | #7,093 | #9,369 |
| 2022 | 22 | 22 | #8,283 | #8,665 |
| 2021 | 19 | 19 | #9,255 | #9,278 |
| 2020 | 33 | 33 | #4,950 | #10,105 |
| 2019 | 43 | 43 | #4,839 | #5,971 |
| 2018 | 24 | 24 | #7,578 | #8,518 |
| 2017 | 30 | 30 | #5,247 | #13,307 |
| 2016 | 41 | 41 | #4,482 | #8,502 |
| 2015 | 49 | 49 | #3,810 | #8,396 |
| 2014 | 54 | 54 | #3,622 | #7,310 |
| 2013 | 64 | 64 | #3,497 | #4,895 |
| 2012 | 58 | 58 | #3,294 | #9,315 |
| 2011 | 53 | 53 | #3,523 | #9,209 |
| 2010 | 69 | 69 | #3,031 | #6,555 |
| 2009 | 47 | 47 | #3,488 | — |
| 2008 | 75 | 75 | #2,732 | #9,453 |
| 2007 | 68 | 68 | #2,951 | #10,369 |
| 2006 | 42 | 42 | #3,700 | — |
| 2005 | 53 | 53 | #3,297 | #10,823 |
| 2004 | 46 | 46 | #3,296 | — |
| 2003 | 43 | 43 | #3,391 | — |
| 2002 | 32 | 32 | #4,035 | — |
| 2001 | 38 | 38 | #3,518 | — |
| 2000 | 47 | 47 | #2,998 | — |
| 1999 | 47 | 47 | #2,876 | — |
| 1998 | 35 | 35 | #3,458 | — |
| 1997 | 43 | — | #3,194 | #8,734 |
| 1996 | 61 | — | #2,357 | #9,807 |
| 1995 | 48 | — | #2,906 | #7,406 |
| 1994 | 44 | — | #2,774 | — |
| 1993 | 52 | — | #2,700 | #7,220 |
| 1992 | 40 | — | #3,237 | #9,153 |
| 1991 | 46 | — | #2,641 | — |
| 1990 | 34 | — | #3,257 | — |
| 1989 | 73 | — | #1,828 | — |
| 1988 | 87 | — | #1,626 | #6,138 |
| 1987 | 86 | — | #1,504 | — |
| 1986 | 93 | — | #1,470 | #5,662 |
| 1985 | 97 | — | #1,354 | — |
| 1984 | 70 | — | #1,738 | #5,284 |
| 1983 | 40 | — | #2,373 | — |
| 1982 | 24 | — | #3,477 | — |
| 1981 | 17 | — | #4,425 | — |
| 1980 | 10 | — | #11,162 | #6,778 |
| 1979 | 8 | — | #7,622 | — |
| 1977 | 5 | — | #10,355 | — |
| 1971 | 6 | — | #7,820 | — |
| 1970 | 7 | — | #6,658 | — |
| 1968 | 8 | — | #5,360 | — |
| 1967 | 5 | — | #7,275 | — |
| 1965 | 5 | — | #6,984 | — |
| 1964 | 9 | — | #4,785 | — |