Total births
398
Girls' name · since 1915
Kazuko
398 babies named Kazuko in U.S. Social Security records since 1915, with the highest year being 1927. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- 398
- total births
- 1915–1945
- years on record
- 1920s
- peak decade
- 54%
- born in that decade
398 girls have been named Kazuko since 1915, though it isn't currently a top-ranked name.
Social Security Administration records show Kazuko recorded 398 times among girls since 1915, though it doesn't currently rank among the most-used girls names, peaking in the 1920s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1915 to 1945.
- 398 total births
- 1915–1945 years on record
- 1920s peak decade
- 54% born in that decade
Data updated Jun 2026
The verdict
398 girls have been named Kazuko since 1915, peaking in the 1920s, last recorded in 1945.
- 398
- total births
- 1915–1945
- years on record
- 1920s
- peak decade
- 54%
- born in that decade
1920s
Peak decade
54% of everyone ever named Kazuko was born in this single decade.
1927
Single peak year
63 babies were named Kazuko in 1927 - its busiest year on record.
Kazuko's usage pattern, beyond the headline number
Splitting Kazuko's full recorded timeline at 1928, 44% of its total births fall in the more recent half of the record versus 56% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1915, with just 5 recorded births -- worth weighing against the 1927 peak of 63 to see the full range of the name's swing in popularity.
Kazuko at a glance
Last recorded 1945Peak year
1927
Current rank
Unranked
Active since
1915
Kazuko popularity over time
Annual U.S. births registered with the Social Security Administration · 1915–1945
- Peak year (1927)
- 63
- Annual births at peak, across 31 years of records
Kazuko by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Kazuko's strongest decade.
214 babies received the name during that ten-year window, about 54% of all-time use.
Kazuko births by decade
Total births in each ten-year window
- 1910s 56
1910s
56 births
- 1920s
1920s
214 births
- 1930s
1930s
106 births
- 1940s 22
1940s
22 births
What this shows Peak: 1920s at 214 births (54% of all-time use).
Kazuko by state
Where Kazuko concentrates geographically, total births since 1915
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 196 | 49.2% |
| #2 | Hawaii | | 69 | 17.3% |
| #3 | Washington | | 24 | 6.0% |
California share of Kazuko's total US births 49.2%
Even split
196 of 398 births nationwide. Compared to a flat distribution across 3 reporting states.
Frequently Asked Questions
How popular is the name Kazuko? ▼
Kazuko has been given to 398 babies in the U.S. since 1915, according to SSA data. Its last appearance in the data was 1945. 63 babies were born in 1927, its single highest year.
When was Kazuko most popular? ▼
Kazuko was most popular in the 1920s decade with 214 total births. The single peak year was 1927.
Where is Kazuko most popular? ▼
The top states for the name Kazuko are California (196 births), Hawaii (69 births), Washington (24 births).
How long has the name Kazuko been used? ▼
The SSA has tracked Kazuko since 1915 -- 31 years through the most recent 1945 data.
What names are similar to Kazuko? ▼
Names with a similar sound or spelling include Kaziah, Kazia, Kazandra, Kaziyah, and 4 more. These share a common prefix and are also used for girls.
What to do with Kazuko's data
- Kazuko's decade-level peak was the 1920s (214 total births); usage has since declined to 22 in the 1940s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Kazukos (196 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 Kazuko
Nearby Names Like Kazuko
Names with a similar sound, spelling, or feel to Kazuko
Kaziah Girl
#4014 581 births
Kazia Girl
#12532 336 births
Kazandra Girl
290 births
Kaziyah Girl
#4867 277 births
Kazue Girl
216 births
Compare Kazuko side by side: Kazuko vs Kaziah Kazuko vs Kazia Kazuko vs Kazandra
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, 1915–1945 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Kazuko: Baby Name Since 1915 - 398 Births, Peak 1927." NameAlmanac. Accessed via https://namealmanac.com/name/kazuko. 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 Kazuko 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.