Hennessey is a rare girls' name that peaked in 2015 and has since faded.
Hennessey is a girl name. It last appears in U.S. records in 2024. Hennessey first appears in 1992 and peaked in 2015 (27 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2024 | 5 | 5 | #16,188 |
| 2023 | 11 | 11 | #9,227 |
| 2022 | 9 | 9 | #10,694 |
| 2021 | 14 | 14 | #7,781 |
| 2020 | 12 | 12 | #8,603 |
| 2019 | 11 | 11 | #9,344 |
| 2018 | 7 | 7 | #12,970 |
| 2017 | 12 | 12 | #8,984 |
| 2016 | 15 | 15 | #7,746 |
| 2015 | 27 | 27 | #5,037 |
| 2014 | 12 | 12 | #9,186 |
| 2013 | 12 | 12 | #9,235 |
| 2012 | 11 | 11 | #9,964 |
| 2011 | 13 | 13 | #8,819 |
| 2010 | 13 | 13 | #8,903 |
| 2009 | 23 | 23 | #5,967 |
| 2008 | 14 | 14 | #8,677 |
| 2007 | 13 | 13 | #9,195 |
| 2006 | 14 | 14 | #8,414 |
| 2005 | 15 | 15 | #7,651 |
| 2004 | 19 | 19 | #6,324 |
| 2003 | 14 | 14 | #7,729 |
| 2002 | 14 | 14 | #7,563 |
| 2001 | 16 | 16 | #6,733 |
| 2000 | 11 | 11 | #8,785 |
| 1999 | 8 | 8 | #10,703 |
| 1998 | 17 | 17 | #5,892 |
| 1997 | 10 | — | #8,574 |
| 1996 | 6 | — | #12,383 |
| 1992 | 5 | — | #14,054 |