Kailey is an established variant of Kaylee that peaked in 2004 and has since faded.
Kailey is predominantly a girl name. In 2025 it ranked #1,420 for girl births in the United States (and #2,659 across all names), given to 153 babies. Kailey first appears in 1970 and peaked in 2004 (1,439 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 153 | 153 | #1,420 | — |
| 2024 | 180 | 180 | #1,288 | — |
| 2023 | 226 | 226 | #1,091 | — |
| 2022 | 256 | 256 | #1,017 | — |
| 2021 | 271 | 271 | #961 | — |
| 2020 | 322 | 322 | #848 | — |
| 2019 | 346 | 346 | #800 | — |
| 2018 | 427 | 427 | #685 | — |
| 2017 | 454 | 454 | #656 | — |
| 2016 | 507 | 507 | #595 | — |
| 2015 | 588 | 588 | #531 | — |
| 2014 | 664 | 664 | #476 | — |
| 2013 | 671 | 671 | #452 | — |
| 2012 | 757 | 757 | #415 | — |
| 2011 | 906 | 906 | #356 | — |
| 2010 | 834 | 834 | #384 | — |
| 2009 | 999 | 999 | #330 | — |
| 2008 | 1,083 | 1,083 | #309 | — |
| 2007 | 1,178 | 1,178 | #287 | — |
| 2006 | 1,275 | 1,275 | #258 | — |
| 2005 | 1,298 | 1,298 | #251 | — |
| 2004 | 1,449 | 1,449 | #228 | #7,266 |
| 2003 | 1,331 | 1,331 | #246 | — |
| 2002 | 1,093 | 1,093 | #284 | — |
| 2001 | 1,090 | 1,090 | #288 | — |
| 2000 | 1,050 | 1,050 | #305 | — |
| 1999 | 1,048 | 1,048 | #294 | — |
| 1998 | 1,114 | 1,114 | #279 | — |
| 1997 | 789 | — | #351 | — |
| 1996 | 730 | — | #369 | — |
| 1995 | 676 | — | #391 | — |
| 1994 | 583 | — | #434 | — |
| 1993 | 573 | — | #436 | — |
| 1992 | 529 | — | #465 | — |
| 1991 | 412 | — | #566 | — |
| 1990 | 376 | — | #603 | — |
| 1989 | 308 | — | #662 | — |
| 1988 | 226 | — | #811 | — |
| 1987 | 169 | — | #956 | — |
| 1986 | 148 | — | #1,025 | — |
| 1985 | 82 | — | #1,500 | — |
| 1984 | 29 | — | #3,014 | — |
| 1983 | 18 | — | #4,183 | — |
| 1982 | 12 | — | #5,698 | — |
| 1981 | 9 | — | #7,046 | — |
| 1980 | 5 | — | #11,092 | — |
| 1972 | 5 | — | #8,829 | — |
| 1970 | 5 | — | #8,578 | — |