Tadao — boys' name
295 babies named Tadao in U.S. Social Security records since 1912, with the highest year being 1920. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
57% of everyone ever named Tadao was born in this single decade.
26 babies were named Tadao in 1920 — its busiest year on record.
What the Data Says About Tadao
The Social Security Administration has registered 295 babies named Tadao between 1912 and 1938, spanning 27 consecutive years of U.S. birth records. As a boy's name, Tadao currently falls outside the top 1,000 boys' names for 1938. The name reached its historical peak in 1920, when 26 babies received it in a single year.
Decade-level aggregation shows that Tadao performed strongest in the 1920s, accumulating 167 births during that ten-year window. Across the 3 decades of recorded activity, Tadao shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 156 births — the largest state-level total in the dataset — followed by California. In total, SSA state-level files list Tadao in 2 of the 51 U.S. reporting jurisdictions.
No etymological entry is currently available for Tadao in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 295 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.
Tadao at a glance
Last recorded 1938Peak year
Current rank
Active since
Tadao popularity over time
Annual U.S. births registered with the Social Security Administration · 1938–1912
- Peak year (1920)
- 26
- Annual births at peak — across 27 years of records
No longer in the modern top-1000 — last recorded 1938.
295 total births across 27 years of SSA records. Peaked in 1920 with 26 births in a single year.
Tadao by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1920s
- 167 births that decade — 57% of Tadao's all-time total
Tadao decade highlights
- Peak decade 167 births
- Runner-up 97 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
1920s was Tadao's strongest decade
167 babies received the name during that ten-year window — about 57% of all-time use.
Tadao by state
Where Tadao concentrates geographically — total births since 1912
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Hawaii | | 156 | 52.9% |
| #2 | California | | 56 | 19.0% |
156 of 295 births nationwide. Compared to a flat distribution across 2 reporting states.
Top 5 states
- Hawaii 52.9% of nationwide
- California 19.0% of nationwide
Recorded in 2 of 51 SSA jurisdictions
Hawaii accounts for 52.9% of all recorded births nationwide — a strong regional concentration for this name.
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Compare Tadao side by side: Tadao vs Tad Tadao vs Tadeo Tadao vs Tadd
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Data Sources
Data as of 2024. Source: U.S. Social Security Administration (SSA).
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1912–1938 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.
State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.