Total births
762
Boys' name · since 1911
Kazuo
Since 1911, U.S. Social Security records show 762 babies named Kazuo, peaking in 1921. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 762
- total births
- 1911–2025
- years on record
- 1920s
- peak decade
- 49%
- born in that decade
Kazuo sits outside today's top ranks for boys, with 762 recorded since 1911.
According to the U.S. Social Security Administration, Kazuo has been recorded 762 times among boys since 1911, though it is not among the currently most-used boys names, with its heaviest use in the 1920s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1911 to 2025.
- 762 total births
- 1911–2025 years on record
- 1920s peak decade
- 49% born in that decade
Data updated Jun 2026
The verdict
762 boys have been named Kazuo since 1911, peaking in the 1920s, last recorded in 2025.
- 762
- total births
- 1911–2025
- years on record
- 1920s
- peak decade
- 49%
- born in that decade
1920s
Peak decade
49% of everyone ever named Kazuo was born in this single decade.
1921
Single peak year
57 babies were named Kazuo in 1921 - its busiest year on record.
Kazuo's usage pattern, beyond the headline number
Kazuo splits its recorded history at 1928: 24% of all births land in the more recent half, 76% in the earlier half, leaning more toward its earlier era than today's. The single quietest year was 1944 (5 births) -- compare that against the 1921 peak of 57 for a sense of just how much the name's popularity has swung.
Kazuo at a glance
Last recorded 2025Peak year
1921
Current rank
Unranked
Active since
1911
Kazuo popularity over time
Annual U.S. births registered with the Social Security Administration · 1911–2025
- Peak year (1921)
- 57
- Annual births at peak, across 115 years of records
Kazuo by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Kazuo's strongest decade.
375 babies received the name during that ten-year window, about 49% of all-time use.
Kazuo births by decade
Total births in each ten-year window
- 1910s
1910s
241 births
- 1920s
1920s
375 births
- 1930s 106
1930s
106 births
- 1940s 11
1940s
11 births
- 2000s 24
2000s
24 births
- 2020s 5
2020s
5 births
What this shows Peak: 1920s at 375 births (49% of all-time use).
How Kazuo 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 Kazuo's total volume
Kazuo vs 15 similarly-sized boys names
Kazuo by state
Where Kazuo concentrates geographically, total births since 1911
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Hawaii | | 299 | 39.2% |
| #2 | California | | 285 | 37.4% |
| #3 | Washington | | 15 | 2.0% |
Hawaii share of Kazuo's total US births 39.2%
Even split
299 of 762 births nationwide. Compared to a flat distribution across 3 reporting states.
Frequently Asked Questions
How popular is the name Kazuo? ▼
762 babies have been named Kazuo since 1911. It was last recorded in 2025. The peak year was 1921 with 57 births.
When was Kazuo most popular? ▼
Kazuo was most popular in the 1920s decade with 375 total births. The single peak year was 1921.
Where is Kazuo most popular? ▼
The top states for the name Kazuo are Hawaii (299 births), California (285 births), Washington (15 births).
How long has the name Kazuo been used? ▼
Records for Kazuo go back to 1911, giving 115 years of history through 2025.
What names are similar to Kazuo? ▼
Names with a similar sound or spelling include Kaz, Kazi, Kazuki, Kazimir, and 4 more. These share a common prefix and are also used for boys.
What to do with Kazuo's data
- Kazuo's decade-level peak was the 1920s (375 total births); usage has since declined to 5 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Hawaii records the most Kazuos (299 births) -- see the full state breakdown if geography matters to your decision. Hawaii 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 Kazuo
Nearby Names Like Kazuo
Names with a similar sound, spelling, or feel to Kazuo
Kaz Boy
#3290 725 births
Kazi Boy
#3487 547 births
Kazuki Boy
#12839 386 births
Kazimir Boy
#2759 344 births
Kazuma Boy
213 births
Compare Kazuo side by side: Kazuo vs Kaz Kazuo vs Kazi Kazuo vs Kazuki
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, 1911–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Kazuo: Baby Name Since 1911 - 762 Births, Peak 1921." NameAlmanac. Accessed via https://namealmanac.com/name/kazuo. 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 Kazuo 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.