Total births
5,783
Boys' name · since 1889
Alfonzo
Alfonzo has 5,783 recorded births since 1889 in federal Social Security data, most heavily in 1970 -- full year-by-year trend, decade aggregates, and state rankings follow.
- #4437
- among boys today
- 5,783
- born since 1889
- 1970s
- peak decade
- 69%
- more common than other boys
5,783 babies have been named Alfonzo since 1889, making it today's #4437 boys' name.
Alfonzo has 5,783 recorded births among boys since 1889, per the U.S. Social Security Administration, ranked #4437 as of the latest data, more common than 69% of boys, busiest in the 1970s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1889 to 2025.
- #4437 among boys today
- 5,783 born since 1889
- 1970s peak decade
- 69% more common than other boys
Data updated Jun 2026
The verdict
Alfonzo is currently the #4437 boys' name in America, more common than 69% of boys - 5,783 born since 1889, peaking in the 1970s.
- #4437
- among boys today
- 5,783
- born since 1889
- 1970s
- peak decade
- 69%
- more common than other boys
Alfonzo vs. every other boys name in current SSA rankings
#4437
of 14,294 boys in use
More common than 69% of names given to boys today.
1970s
Peak decade
14% of everyone ever named Alfonzo was born in this single decade.
1970
Single peak year
90 babies were named Alfonzo in 1970 - its busiest year on record.
How Alfonzo compares
5,783 Top 11% higher than 89% of 14,294 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Alfonzo's all-time total is 16x the median boys name, and Liam still leads by a wide margin.
| Metric | Alfonzo | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 5,783 | 367 | 358,536 |
| Peak-year births | 90 | 23 | 22,252 |
Alfonzo's usage pattern, beyond the headline number
Alfonzo splits its recorded history at 1962: 59% of all births land in the more recent half, 41% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1898 (5 births) -- compare that against the 1970 peak of 90 for a sense of just how much the name's popularity has swung.
Alfonzo at a glance
Outside the top 1,000Peak year
1970
Current rank
#4,437
Active since
1889
Alfonzo popularity over time
Annual U.S. births registered with the Social Security Administration · 1889–2025
- Peak year (1970)
- 90
- Annual births at peak, across 137 years of records
Alfonzo by decade
Total births in each ten-year window, peak vs trough at a glance
1970s was Alfonzo's strongest decade.
802 babies received the name during that ten-year window, about 14% of all-time use.
Alfonzo births by decade
Total births in each ten-year window
- 1880s 8
1880s
8 births
- 1890s 5
1890s
5 births
- 1900s 83
1900s
83 births
- 1910s 221
1910s
221 births
- 1920s
1920s
368 births
- 1930s
1930s
382 births
- 1940s
1940s
473 births
- 1950s
1950s
701 births
- 1960s
1960s
669 births
- 1970s
1970s
802 births
- 1980s
1980s
669 births
- 1990s
1990s
586 births
- 2000s
2000s
396 births
- 2010s 280
2010s
280 births
- 2020s 140
2020s
140 births
What this shows Peak: 1970s at 802 births (14% of all-time use).
How Alfonzo 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 Alfonzo's total volume
Alfonzo vs 15 similarly-sized boys names
Alfonzo by state
Where Alfonzo concentrates geographically, total births since 1889
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 475 | 8.2% |
| #2 | Texas | | 318 | 5.5% |
| #3 | Illinois | | 224 | 3.9% |
| #4 | Georgia | | 195 | 3.4% |
| #5 | North Carolina | | 191 | 3.3% |
| #6 | Alabama | | 112 | 1.9% |
| #7 | New York | | 94 | 1.6% |
| #8 | South Carolina | | 90 | 1.6% |
California share of Alfonzo's total US births 8.2%
Even split
475 of 5,783 births nationwide. Compared to a flat distribution across 21 reporting states.
Alfonzo appears in 21 states. Explore state details →
Frequently Asked Questions
How popular is the name Alfonzo? ▼
Since 1889, Social Security records show 5,783 babies named Alfonzo. Today it holds rank #4437 among boys. Its busiest year on record was 1970, with 90 births.
When was Alfonzo most popular? ▼
Alfonzo was most popular in the 1970s decade with 802 total births. The single peak year was 1970.
Where is Alfonzo most popular? ▼
The top states for the name Alfonzo are California (475 births), Texas (318 births), Illinois (224 births).
How long has the name Alfonzo been used? ▼
The SSA has tracked Alfonzo since 1889 -- 137 years through the most recent 2025 data.
What names are similar to Alfonzo? ▼
Names with a similar sound or spelling include Alfred, Alfredo, Alfonso, Alford, and 4 more. These share a common prefix and are also used for boys.
What to do with Alfonzo's data
- Alfonzo's decade-level peak was the 1970s (802 total births); usage has since declined to 140 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Alfonzos (475 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 Alfonzo
Nearby Names Like Alfonzo
Names with a similar sound, spelling, or feel to Alfonzo
Alfred Boy
#837 243,861 births
Alfredo Boy
#780 57,075 births
Alfonso Boy
#923 41,464 births
Alford Boy
4,790 births
Alfonza Boy
1,714 births
Compare Alfonzo side by side: Alfonzo vs Alfred Alfonzo vs Alfredo Alfonzo vs Alfonso
Related Names
Names with a similar popularity rank to Alfonzo
Leeroy #4436
4,404 births · Peak 1927
Cornell #4438
11,347 births · Peak 1962
Jens #4435
2,456 births · Peak 1966
Silver #4439
528 births · Peak 2024
Russel #4434
16,610 births · Peak 1920
Amador #4440
3,372 births · Peak 1992
Jim #4433
153,122 births · Peak 1959
Faustino #4441
3,812 births · Peak 1991
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, 1889–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Alfonzo: #4437 Boys' Name - 5,783 Births, Peak 1970." NameAlmanac. Accessed via https://namealmanac.com/name/alfonzo. 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 Alfonzo 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.