Total births
627
Boys' name · since 1915
Duffy
Duffy has 627 recorded births since 1915 in federal Social Security data, most heavily in 1969 -- full year-by-year trend, decade aggregates, and state rankings follow.
- 627
- total births
- 1915–2012
- years on record
- 1950s
- peak decade
- 22%
- born in that decade
Duffy sits outside today's top ranks for boys, with 627 recorded since 1915.
According to the U.S. Social Security Administration, Duffy has been recorded 627 times among boys since 1915, though it is not among the currently most-used boys names, with its heaviest use in the 1950s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1915 to 2012.
- 627 total births
- 1915–2012 years on record
- 1950s peak decade
- 22% born in that decade
Data updated Jun 2026
The verdict
627 boys have been named Duffy since 1915, peaking in the 1950s, last recorded in 2012.
- 627
- total births
- 1915–2012
- years on record
- 1950s
- peak decade
- 22%
- born in that decade
1950s
Peak decade
22% of everyone ever named Duffy was born in this single decade.
1969
Single peak year
22 babies were named Duffy in 1969 - its busiest year on record.
Duffy's usage pattern, beyond the headline number
Duffy splits its recorded history at 1957: 58% of all births land in the more recent half, 42% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1915 (5 births) -- compare that against the 1969 peak of 22 for a sense of just how much the name's popularity has swung.
Duffy at a glance
Last recorded 2012Peak year
1969
Current rank
Unranked
Active since
1915
Duffy popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1915–2012
- Peak year (1969)
- 22
- Annual births at peak, across 98 years of records
Duffy popularity over time - girls
16 total births recorded since 1958 (Duffy as girls' name)
Duffy by decade
Total births in each ten-year window, peak vs trough at a glance
1950s was Duffy's strongest decade.
136 babies received the name during that ten-year window, about 22% of all-time use.
Duffy births by decade
Total births in each ten-year window
- 1910s 24
1910s
24 births
- 1920s 54
1920s
54 births
- 1930s 23
1930s
23 births
- 1940s
1940s
68 births
- 1950s
1950s
136 births
- 1960s
1960s
122 births
- 1970s
1970s
133 births
- 1980s 32
1980s
32 births
- 1990s 30
1990s
30 births
- 2010s 5
2010s
5 births
What this shows Peak: 1950s at 136 births (22% of all-time use).
How Duffy compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Duffy's total volume
Duffy vs 15 similarly-sized boys names
Duffy by state
Where Duffy concentrates geographically, total births since 1915
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 5 | 0.8% |
California share of Duffy's total US births 0.8%
5 of 627 births nationwide.
Frequently Asked Questions
How popular is the name Duffy? ▼
Duffy has been given to 627 babies in the U.S. since 1915, according to SSA data. Its last appearance in the data was 2012. 22 babies were born in 1969, its single highest year.
When was Duffy most popular? ▼
Duffy was most popular in the 1950s decade with 136 total births. The single peak year was 1969.
Where is Duffy most popular? ▼
The top states for the name Duffy are California (5 births).
How long has the name Duffy been used? ▼
Duffy has been recorded in Social Security data since 1915, spanning 98 years of data through 2012.
What names are similar to Duffy? ▼
Names with a similar sound or spelling include Duff, Duffie. These share a common prefix and are also used for boys.
What to do with Duffy's data
- Duffy's decade-level peak was the 1950s (136 total births); usage has since declined to 5 in the 2010s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Duffys (5 births) -- see the full state breakdown if geography matters to your decision. California names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Duffy
Nearby Names Like Duffy
Names with a similar sound, spelling, or feel to Duffy
Compare Duffy side by side: Duffy vs Duff Duffy vs Duffie
Related Names
Names with a similar number of total births
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1915–2012 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Duffy: Baby Name Since 1915 - 627 Births, Peak 1969." NameAlmanac. Accessed via https://namealmanac.com/name/duffy. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Duffy draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.