Total births
194
Boys' name · since 1919
Kotaro
194 babies named Kotaro in U.S. Social Security records since 1919, with the highest year being 2010. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- 194
- total births
- 1919–2023
- years on record
- 2000s
- peak decade
- 38%
- born in that decade
Kotaro sits outside today's top ranks for boys, with 194 recorded since 1919.
According to the U.S. Social Security Administration, Kotaro has been recorded 194 times among boys since 1919, though it is not among the currently most-used boys names, with its heaviest use in the 2000s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1919 to 2023.
- 194 total births
- 1919–2023 years on record
- 2000s peak decade
- 38% born in that decade
Data updated Jul 2026
The verdict
194 boys have been named Kotaro since 1919, peaking in the 2000s, last recorded in 2023.
- 194
- total births
- 1919–2023
- years on record
- 2000s
- peak decade
- 38%
- born in that decade
2000s
Peak decade
38% of everyone ever named Kotaro was born in this single decade.
2010
Single peak year
15 babies were named Kotaro in 2010 - its busiest year on record.
Kotaro's usage pattern, beyond the headline number
Kotaro splits its recorded history at 2008: 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 2010 peak of 15 for a sense of just how much the name's popularity has swung.
Kotaro at a glance
Last recorded 2023Peak year
2010
Current rank
Unranked
Active since
1919
Kotaro popularity over time
Annual U.S. births registered with the Social Security Administration · 1919–2023
- Peak year (2010)
- 15
- Annual births at peak, across 105 years of records
Kotaro by decade
Total births in each ten-year window, peak vs trough at a glance
2000s was Kotaro's strongest decade.
73 babies received the name during that ten-year window, about 38% of all-time use.
Kotaro births by decade
Total births in each ten-year window
- 1910s 5
1910s
5 births
- 1990s 27
1990s
27 births
- 2000s
2000s
73 births
- 2010s
2010s
71 births
- 2020s 18
2020s
18 births
What this shows Peak: 2000s at 73 births (38% of all-time use).
Kotaro by state
Where Kotaro concentrates geographically, total births since 1919
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 12 | 6.2% |
| #2 | Hawaii | | 5 | 2.6% |
California share of Kotaro's total US births 6.2%
Even split
12 of 194 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Kotaro? ▼
Kotaro has been given to 194 babies in the U.S. since 1919, according to SSA data. Its last appearance in the data was 2023. 15 babies were born in 2010, its single highest year.
When was Kotaro most popular? ▼
Kotaro was most popular in the 2000s decade with 73 total births. The single peak year was 2010.
Where is Kotaro most popular? ▼
The top states for the name Kotaro are California (12 births), Hawaii (5 births).
How long has the name Kotaro been used? ▼
The SSA has tracked Kotaro since 1919 -- 105 years through the most recent 2023 data.
What names are similar to Kotaro? ▼
Names with a similar sound or spelling include Kota, Koty, Kotah, Kothan. These share a common prefix and are also used for boys.
What to do with Kotaro's data
- Kotaro's decade-level peak was the 2000s (73 total births); usage has since declined to 18 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Kotaros (12 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 Kotaro
Nearby Names Like Kotaro
Names with a similar sound, spelling, or feel to Kotaro
Compare Kotaro side by side: Kotaro vs Kota Kotaro vs Koty Kotaro vs Kotah
Related Names
Names with a similar number of total births
Data Sources
Data as of July 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, 1919–2023 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Kotaro: Baby Name Since 1919 - 194 Births, Peak 2010." NameAlmanac. Accessed via https://namealmanac.com/name/kotaro. 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 Kotaro 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 July 2026.