Kaylyn is an established girls' name that peaked in 1994 and has since faded.
Kaylyn is predominantly a girl name. In 2025 it ranked #2,525 for girl births in the United States (and #4,485 across all names), given to 70 babies. Kaylyn was first reported in SSA data in 1949 and peaked in 1997 (462 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 70 | 70 | #2,525 | — |
| 2024 | 58 | 58 | #2,870 | — |
| 2023 | 77 | 77 | #2,372 | — |
| 2022 | 75 | 75 | #2,543 | #13,335 |
| 2021 | 97 | 97 | #2,000 | — |
| 2020 | 74 | 74 | #2,389 | — |
| 2019 | 101 | 101 | #1,942 | — |
| 2018 | 119 | 119 | #1,733 | — |
| 2017 | 131 | 131 | #1,647 | — |
| 2016 | 167 | 167 | #1,400 | — |
| 2015 | 192 | 192 | #1,272 | — |
| 2014 | 201 | 201 | #1,216 | — |
| 2013 | 255 | 255 | #985 | — |
| 2012 | 277 | 277 | #927 | — |
| 2011 | 354 | 354 | #769 | — |
| 2010 | 356 | 356 | #770 | — |
| 2009 | 413 | 413 | #703 | — |
| 2008 | 411 | 411 | #723 | — |
| 2007 | 462 | 462 | #642 | — |
| 2006 | 409 | 409 | #693 | — |
| 2005 | 425 | 425 | #662 | #12,412 |
| 2004 | 403 | 403 | #690 | #9,466 |
| 2003 | 408 | 408 | #651 | — |
| 2002 | 430 | 430 | #600 | — |
| 2001 | 392 | 392 | #644 | — |
| 2000 | 437 | 437 | #589 | — |
| 1999 | 448 | 448 | #568 | #10,790 |
| 1998 | 437 | 437 | #563 | — |
| 1997 | 462 | — | #519 | — |
| 1996 | 419 | — | #559 | — |
| 1995 | 442 | — | #546 | #8,349 |
| 1994 | 464 | — | #536 | #9,578 |
| 1993 | 398 | — | #592 | — |
| 1992 | 388 | — | #595 | #9,132 |
| 1991 | 287 | — | #724 | — |
| 1990 | 315 | — | #678 | — |
| 1989 | 263 | — | #749 | — |
| 1988 | 197 | — | #889 | — |
| 1987 | 160 | — | #984 | — |
| 1986 | 101 | — | #1,318 | — |
| 1985 | 72 | — | #1,642 | — |
| 1984 | 45 | — | #2,209 | — |
| 1983 | 38 | — | #2,451 | — |
| 1982 | 29 | — | #3,050 | — |
| 1981 | 17 | — | #4,422 | — |
| 1980 | 19 | — | #4,059 | — |
| 1979 | 15 | — | #4,726 | — |
| 1978 | 11 | — | #5,729 | — |
| 1977 | 10 | — | #6,076 | — |
| 1976 | 14 | — | #4,469 | — |
| 1975 | 11 | — | #5,303 | — |
| 1974 | 15 | — | #4,119 | — |
| 1973 | 13 | — | #4,467 | — |
| 1972 | 12 | — | #4,641 | — |
| 1971 | 11 | — | #4,946 | — |
| 1970 | 13 | — | #4,354 | — |
| 1969 | 14 | — | #3,862 | — |
| 1968 | 21 | — | #2,821 | — |
| 1967 | 16 | — | #3,260 | — |
| 1966 | 7 | — | #5,518 | — |
| 1965 | 11 | — | #4,064 | — |
| 1964 | 19 | — | #2,958 | — |
| 1963 | 15 | — | #3,396 | — |
| 1962 | 11 | — | #4,129 | — |
| 1961 | 10 | — | #4,381 | — |
| 1960 | 7 | — | #5,424 | — |
| 1959 | 9 | — | #4,462 | — |
| 1958 | 5 | — | #6,529 | — |
| 1957 | 5 | — | #6,556 | — |
| 1956 | 5 | — | #6,412 | — |
| 1953 | 6 | — | #5,356 | — |
| 1950 | 5 | — | #5,690 | — |
| 1949 | 5 | — | #5,635 | — |