Baby Names US
girls' name ★ peaked 2019

Hennessy

Gender Girl · 4% boys Rank 2025 #3,936 Trend ↓ Falling 41%
Rank 2025
#3,936
among girls · ↓398 vs 2024
Babies in 2025
37
named Hennessy · -26% vs 2024
How common
1 in 43,440
girls born in 2025
Peak year
2019
82 babies
All-time total
1,630
#5,538 all-time among girls
First recorded
1991
in Social Security records

Hennessy popularity over time

1,630 babies have been named Hennessy since 1991, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.020.040.060.0818801900192019401960198020002020GirlsBoys
GirlsBoys

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – – – – – –
1920s – – – – – –
1930s – – – – – –
1940s – – – – – –
1950s – – – – – –
1960s – – – – – –
1970s – – – – – –
1980s – – – – – –
1990s 120 26 146 15 – #4,007
2000s 558 13 571 57 +291% #2,454
2010s 584 17 601 60 +5% #2,239
2020s (to 2025) 306 6 312 52 -13% #2,600

Where Hennessy is heading

A five-year projection from the recent trend in births per 1,000 girls (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 girls Implied rank
2026 34 0.02 outside top 500
2027 32 0.02 outside top 500
2028 30 0.02 outside top 500
2029 28 0.02 outside top 500
2030 27 0.02 outside top 500

Where Hennessy is most popular

Girls named Hennessy per 1,000 girls born in each state, 2021–2025. National average: 0.031 per 1,000. Strongest in California, Texas, and Washington.

Vs national average
well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are girls named Hennessy born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State Girls 2021–2025 Per 1,000 vs national
California 59 0.070 +125%
Texas 35 0.044 +40%
Washington 5 0.035 +11%
Florida 13 0.030 ≈ national
Alaska – – –
Alabama – – –
Arkansas – – –
Arizona – – –
Colorado – – –
Connecticut – – –
District of Columbia – – –
Delaware – – –
Georgia – – –
Hawaii – – –
Iowa – – –
Idaho – – –
Illinois – – –
Indiana – – –
Kansas – – –
Kentucky – – –
Louisiana – – –
Massachusetts – – –
Maryland – – –
Maine – – –
Michigan – – –
Minnesota – – –
Missouri – – –
Mississippi – – –
Montana – – –
North Carolina – – –
North Dakota – – –
Nebraska – – –
New Hampshire – – –
New Jersey – – –
New Mexico – – –
Nevada – – –
New York – – –
Ohio – – –
Oklahoma – – –
Oregon – – –
Pennsylvania – – –
Rhode Island – – –
South Carolina – – –
South Dakota – – –
Tennessee – – –
Utah – – –
Virginia – – –
Vermont – – –
Wisconsin – – –
West Virginia – – –
Wyoming – – –

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Hennessy

Hennessy is rare for girls in the United States, ranked #3,936 in 2025 with 37 babies given the name. It is currently holding steady compared with a decade ago.

Since 1991, 1,630 American babies have been named Hennessy. Its peak came in 2019, when 82 newborns received the name, the signature sound of the 2010s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Hennessy stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Hennessy?

The median living Hennessy is about 14 years old; half are between 7 and 20. An estimated 1,600 people named Hennessy are alive in the United States today.

median 14 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Hennessy year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 37 #3,936 – –
2024 44 #3,538 6 #11,437
2023 39 #3,866 – –
2022 66 #2,643 – –
2021 67 #2,600 – –
2020 53 #3,038 – –
2019 82 #2,239 – –
2018 74 #2,422 6 #11,293
2017 45 #3,452 – –
2016 44 #3,547 6 #11,226
2015 38 #3,940 5 #12,783
2014 49 #3,290 – –
2013 62 #2,781 – –
2012 57 #2,986 – –
2011 62 #2,811 – –
2010 71 #2,568 – –
2009 78 #2,454 – –
2008 70 #2,644 – –
2007 57 #3,069 7 #10,161
2006 74 #2,492 – –
2005 62 #2,711 – –
2004 54 #2,937 – –
2003 49 #3,058 – –
2002 39 #3,482 – –
2001 41 #3,332 6 #9,711
2000 34 #3,761 – –
1995 20 #4,907 – –
1990 – – – –
1985 – – – –
1980 – – – –
1975 – – – –
1970 – – – –
1965 – – – –
1960 – – – –
1955 – – – –
1950 – – – –
1945 – – – –
1940 – – – –
1935 – – – –
1930 – – – –
1925 – – – –
1920 – – – –
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Hennessy, drawn from the same Social Security data as the charts above.

How old is the average Hennessy?

The median living Hennessy is about 14 years old. Half of all living Hennessys are between 7 and 20 years old.

How many people named Hennessy are alive today?

An estimated 1,600 people named Hennessy are alive in the United States, based on 1,630 recorded births and Social Security life tables.

How popular is the name Hennessy in 2025?

Hennessy ranked #3,936 among girls' names in the United States in 2025, with 37 babies given the name, according to Social Security Administration data.

How many people are named Hennessy?

1,630 babies have been named Hennessy in the United States since 1991, based on Social Security card applications.

When was the name Hennessy most popular?

Hennessy peaked in 2019, when 82 newborns received the name.

Is Hennessy a boy or girl name?

Hennessy is overwhelmingly a girl's name: 96% of babies with the name.

Is the name Hennessy rising or falling?

Hennessy has been roughly stable over the past decade.

Will Hennessy become more popular?

Hennessy is trending downward. If the recent trend holds, we project roughly 27 girls named Hennessy in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Hennessy

Names that sound and feel close to Hennessy: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Hennessy with similar names → More names starting with H →