Total births
45,955
Boys' name · since 1880
Alonzo
45,955 babies named Alonzo in U.S. Social Security records since 1880, with the highest year being 2022. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #512
- among boys today
- 45,955
- born since 1880
- 2010s
- peak decade
- 96%
- more common than other boys
45,955 babies have been named Alonzo since 1880, making it today's #512 boys' name.
Social Security Administration records show Alonzo recorded 45,955 times among boys since 1880, holding rank #512 nationally today, ahead of 96% of boys, peaking in the 2010s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1880 to 2025.
- #512 among boys today
- 45,955 born since 1880
- 2010s peak decade
- 96% more common than other boys
Data updated Jun 2026
The verdict
Alonzo is currently the #512 boys' name in America, more common than 96% of boys - 45,955 born since 1880, peaking in the 2010s.
- #512
- among boys today
- 45,955
- born since 1880
- 2010s
- peak decade
- 96%
- more common than other boys
Alonzo vs. every other boys name in current SSA rankings
#512
of 14,294 boys in use
More common than 96% of names given to boys today.
2010s
Peak decade
11% of everyone ever named Alonzo was born in this single decade.
2022
Single peak year
651 babies were named Alonzo in 2022 - its busiest year on record.
How Alonzo compares
45,955 Top 4% higher than 96% 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
Alonzo's all-time total is 125x the median boys name, and Liam still leads by a wide margin.
| Metric | Alonzo | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 45,955 | 367 | 358,536 |
| Peak-year births | 651 | 23 | 22,252 |
Alonzo's usage pattern, beyond the headline number
Alonzo splits its recorded history at 1953: 69% of all births land in the more recent half, 31% in the earlier half, a lean toward present-day use rather than a passing spike. The single quietest year was 1903 (56 births) -- compare that against the 2022 peak of 651 for a sense of just how much the name's popularity has swung.
Alonzo at a glance
Top 1,000 boys' namePeak year
2022
Current rank
#512
Active since
1880
Alonzo popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1880–2025
- Peak year (2022)
- 651
- Annual births at peak, across 146 years of records
Alonzo popularity over time - girls
154 total births recorded since 1927 (Alonzo as girls' name)
Alonzo by decade
Total births in each ten-year window, peak vs trough at a glance
2010s was Alonzo's strongest decade.
5,251 babies received the name during that ten-year window, about 11% of all-time use.
Alonzo births by decade
Total births in each ten-year window
- 1880s 1,088
1880s
1,088 births
- 1890s 879
1890s
879 births
- 1900s 808
1900s
808 births
- 1910s
1910s
2,218 births
- 1920s
1920s
2,986 births
- 1930s
1930s
2,434 births
- 1940s
1940s
2,647 births
- 1950s
1950s
3,966 births
- 1960s
1960s
4,395 births
- 1970s
1970s
3,490 births
- 1980s
1980s
3,619 births
- 1990s
1990s
4,262 births
- 2000s
2000s
4,329 births
- 2010s
2010s
5,251 births
- 2020s
2020s
3,583 births
What this shows Peak: 2010s at 5,251 births (11% of all-time use).
How Alonzo 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 Alonzo's total volume
Alonzo vs 15 similarly-sized boys names
Alonzo by state
Where Alonzo concentrates geographically, total births since 1880
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 5,236 | 11.4% |
| #2 | Texas | | 4,785 | 10.4% |
| #3 | Illinois | | 2,499 | 5.4% |
| #4 | Florida | | 2,097 | 4.6% |
| #5 | Georgia | | 1,926 | 4.2% |
| #6 | New York | | 1,868 | 4.1% |
| #7 | North Carolina | | 1,414 | 3.1% |
| #8 | South Carolina | | 1,375 | 3.0% |
California share of Alonzo's total US births 11.4%
Even split
5,236 of 45,955 births nationwide. Compared to a flat distribution across 44 reporting states.
Alonzo appears in 44 states. Explore state details →
Frequently Asked Questions
How popular is the name Alonzo? ▼
45,955 babies have been named Alonzo since 1880. It currently ranks #512 among boys. The peak year was 2022 with 651 births.
When was Alonzo most popular? ▼
Alonzo was most popular in the 2010s decade with 5,251 total births. The single peak year was 2022.
Where is Alonzo most popular? ▼
The top states for the name Alonzo are California (5,236 births), Texas (4,785 births), Illinois (2,499 births).
How long has the name Alonzo been used? ▼
Records for Alonzo go back to 1880, giving 146 years of history through 2025.
What names are similar to Alonzo? ▼
Names with a similar sound or spelling include Alonso, Aloysius, Alonza, Alois, and 4 more. These share a common prefix and are also used for boys.
What to do with Alonzo's data
- Alonzo's usage has stayed within range of its 2010s decade-level peak (5,251 total births) through the 2020s (3,583) -- a comparatively stable name, not a fading trend.
- California records the most Alonzos (5,236 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 Alonzo
Nearby Names Like Alonzo
Names with a similar sound, spelling, or feel to Alonzo
Alonso Boy
#771 12,231 births
Aloysius Boy
#4704 5,724 births
Alonza Boy
3,315 births
Alois Boy
#10944 2,525 births
Alon Boy
#4603 1,188 births
Compare Alonzo side by side: Alonzo vs Alonso Alonzo vs Aloysius Alonzo vs Alonza
Related Names
Names with a similar popularity rank to Alonzo
Tripp #511
8,975 births · Peak 2022
Johnathan #513
98,262 births · Peak 1990
Leonidas #510
10,281 births · Peak 2022
Lian #514
4,579 births · Peak 2025
Ariel #509
21,968 births · Peak 1991
Kaison #515
7,182 births · Peak 2020
Lawrence #508
461,170 births · Peak 1952
Devin #516
156,250 births · Peak 1998
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, 1880–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Alonzo: #512 Boys' Name - 45,955 Births, Peak 2022." NameAlmanac. Accessed via https://namealmanac.com/name/alonzo. 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 Alonzo 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.