Total births
144
Unisex name · since 1919
Alfonsa
144 babies named Alfonsa in U.S. Social Security records since 1919, with the highest year being 1947. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- 144
- total births
- 1919–1972
- years on record
- 1940s
- peak decade
- 33%
- born in that decade
Alfonsa sits outside today's top ranks for boys, with 144 recorded since 1919.
Social Security Administration records show Alfonsa recorded 144 times among boys since 1919, though it doesn't currently rank among the most-used boys names, peaking in the 1940s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1919 to 1972.
- 144 total births
- 1919–1972 years on record
- 1940s peak decade
- 33% born in that decade
Data updated Jun 2026
The verdict
144 boys have been named Alfonsa since 1919, peaking in the 1940s, last recorded in 1972.
- 144
- total births
- 1919–1972
- years on record
- 1940s
- peak decade
- 33%
- born in that decade
1940s
Peak decade
33% of everyone ever named Alfonsa was born in this single decade.
1947
Single peak year
11 babies were named Alfonsa in 1947 - its busiest year on record.
Alfonsa's usage pattern, beyond the headline number
Alfonsa splits its recorded history at 1947: 54% of all births land in the more recent half, 46% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1919 (5 births) -- compare that against the 1947 peak of 11 for a sense of just how much the name's popularity has swung.
Alfonsa at a glance
Last recorded 1972Peak year
1947
Current rank
Unranked
Active since
1919
Alfonsa popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1919–1972
- Peak year (1947)
- 11
- Annual births at peak, across 54 years of records
Alfonsa popularity over time - girls
11 total births recorded since 1924 (Alfonsa as girls' name)
Alfonsa by decade
Total births in each ten-year window, peak vs trough at a glance
1940s was Alfonsa's strongest decade.
47 babies received the name during that ten-year window, about 33% of all-time use.
Alfonsa births by decade
Total births in each ten-year window
- 1910s 5
1910s
5 births
- 1920s 11
1920s
11 births
- 1930s
1930s
20 births
- 1940s
1940s
47 births
- 1950s
1950s
37 births
- 1960s 13
1960s
13 births
- 1970s 11
1970s
11 births
What this shows Peak: 1940s at 47 births (33% of all-time use).
Frequently Asked Questions
How popular is the name Alfonsa? ▼
144 babies have been named Alfonsa since 1919. It was last recorded in 1972. The peak year was 1947 with 11 births.
When was Alfonsa most popular? ▼
Alfonsa was most popular in the 1940s decade with 47 total births. The single peak year was 1947.
Is Alfonsa a unisex name? ▼
Yes, Alfonsa is used for both boys and girls. As a boy's name it has 144 births, and as a girl's name it has 11 births.
How long has the name Alfonsa been used? ▼
The SSA has tracked Alfonsa since 1919 -- 54 years through the most recent 1972 data.
What names are similar to Alfonsa? ▼
Names with a similar sound or spelling include Alfred, Alfredo, Alfonso, Alfonzo, and 4 more. These share a common prefix and are also used for boys.
What to do with Alfonsa's data
- Alfonsa's decade-level peak was the 1940s (47 total births); usage has since declined to 11 in the 1970s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- 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 Alfonsa
Nearby Names Like Alfonsa
Names with a similar sound, spelling, or feel to Alfonsa
Alfred Boy
#837 243,861 births
Alfredo Boy
#780 57,075 births
Alfonso Boy
#923 41,464 births
Alfonzo Boy
#4437 5,783 births
Alford Boy
4,790 births
Compare Alfonsa side by side: Alfonsa vs Alfred Alfonsa vs Alfredo Alfonsa vs Alfonso
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, 1919–1972 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Alfonsa: Baby Name Since 1919 - 144 Births, Peak 1947." NameAlmanac. Accessed via https://namealmanac.com/name/alfonsa. 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 Alfonsa 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.