Hennessy
Hennessy was given to 37 girls in 2025, #3,935 among girls’ names; 1,630 Americans have been recorded with it since 1991 (Social Security Administration, published May 2026).
An estimated 1,620 Americans named Hennessy and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 15 years old and half are between 8 and 21.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Hennessy by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Hennessy?
#3,935 among girls’ names, 2025
Hennessy rose from #3,939 in 2015 to #3,935 in 2025 among girls’ names; its share of girls born rose from 21.3 to 23.0 per million.
82 babies in 2019, the peak
Hennessy peaked in 2019, when 82 girls were given it, #2,239 among girls’ names. The 37 births of 2025 are 45% of that peak.
Births by sex.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 37 | #3,935 | 23.0 |
| 2024 | 44 | #3,538 | 27.2 |
| 2023 | 39 | #3,864 | 24.3 |
| 2022 | 66 | #2,643 | 40.2 |
| 2021 | 67 | #2,600 | 40.8 |
| 2020 | 53 | #3,038 | 32.8 |
| 2019 | 82 | #2,239 | 48.9 |
| 2018 | 74 | #2,422 | 43.5 |
| 2017 | 45 | #3,451 | 26.1 |
| 2016 | 44 | #3,547 | 24.8 |
Every recorded year (34)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2015 | 38 | #3,939 | 21.3 |
| 2014 | 49 | #3,288 | 27.4 |
| 2013 | 62 | #2,780 | 35.3 |
| 2012 | 57 | #2,985 | 32.4 |
| 2011 | 62 | #2,810 | 35.2 |
| 2010 | 71 | #2,568 | 39.9 |
| 2009 | 78 | #2,453 | 42.5 |
| 2008 | 70 | #2,644 | 37.0 |
| 2007 | 57 | #3,069 | 29.6 |
| 2006 | 74 | #2,492 | 38.9 |
| 2005 | 62 | #2,707 | 33.6 |
| 2004 | 54 | #2,933 | 29.4 |
| 2003 | 49 | #3,055 | 26.8 |
| 2002 | 39 | #3,478 | 21.7 |
| 2001 | 41 | #3,328 | 22.8 |
| 2000 | 34 | #3,756 | 18.7 |
| 1999 | 29 | #4,003 | 16.3 |
| 1998 | 23 | #4,697 | 13.0 |
| 1997 | 17 | #5,706 | 9.8 |
| 1996 | 13 | #6,866 | 7.4 |
| 1995 | 20 | #4,902 | 11.4 |
| 1994 | 7 | #10,973 | 3.9 |
| 1993 | 6 | #12,334 | 3.3 |
| 1991 | 5 | #13,942 | 2.7 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Hennessy a boy’s or a girl’s name?
Of the 1,630 Americans recorded as Hennessy, 96% are girls and 4% boys. In 2025 it went to 37 girls; SSA lists no boys with it that year (fewer than 5, or none).
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Hennessy: the SSA national file counts each sex separately.
How many people are named Hennessy, and how old are they?
1,620 alive in 2026, estimated
That is 99% of the 1,630 Americans ever recorded as Hennessy. The median Hennessy alive today is 15 years old; half are between 8 and 21.
The 2020 Census counted 1,064 people named Hennessy (967 women and girls, 97 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,321 born in the U.S. The Census count is 19% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Millennials | 1981-1996 | 57 |
| Generation Z | 1997-2012 | 840 |
| Generation Alpha | 2013-2025 | 719 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Hennessy born?
| State | Births 2025 | Rank, girls | vs. national |
|---|---|---|---|
| California | 10 | #2,006 | 2.3× |
| Texas | 6 | #3,066 | 1.3× |
Where Hennessy is more common than its national share predicts
Relative to its national share, Hennessy is most over-represented in California: since 1991 it was given 2.3 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among girls’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Hennessy with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 4 names spelled alike, given to 2,259 babies since 1880, Hennessy is the most given (72% of them). In 2025 it was given to 37 of their 37 babies (100%), again the most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Hennessy
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Hennessy and names like it
- Compare Hennessy and HennesseyBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2010sHennessy peaked in 2019.
- California’s most given namesThe state where SSA recorded the most babies named Hennessy since 1910.
- The top names of 2019The year the most babies were named Hennessy.
- The names of Generation ZMost people named Hennessy alive today were born 1997-2012.
- Names starting with HMost given first.