Recorded 1912–1938 Boys' name Peak 1920 295 births

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.

1910s971920s1671930s31
1920s
Peak decade

57% of everyone ever named Tadao was born in this single decade.

1920
Single peak year

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 1938

Total births

295

Since 1912

27 years of records

Peak year

1920

26 births that year

Strongest decade: 1920s

Current rank

Unranked

Outside the modern top-1,000

As of 1938

Active since

1912

Recorded for 27 years

Last year on file: 1938

Tadao popularity over time

Annual U.S. births registered with the Social Security Administration · 1938–1912

Last recorded 1938
Peak year (1920)
26
Annual births at peak — across 27 years of records
051015202530 19381930192719241921191819151912 6

Tadao by decade

Total births in each ten-year window — peak vs trough at a glance

Peak: 1920s
Peak decade
1920s
167 births that decade — 57% of Tadao's all-time total
1910s971920s1671930s31

Tadao by state

Where Tadao concentrates geographically — total births since 1912

Regionally concentrated
Top 2 states by recorded births for the name Tadao
Rank State Visual share Births Share of total
#1 Hawaii
156 52.9%
#2 California
56 19.0%
Hawaii share of Tadao's total US births 52.9%
Even split

156 of 295 births nationwide. Compared to a flat distribution across 2 reporting states.

Frequently Asked Questions

How popular is the name Tadao?
295 babies have been named Tadao since 1912. It was last recorded in 1938. The peak year was 1920 with 26 births.
When was Tadao most popular?
Tadao was most popular in the 1920s decade with 167 total births. The single peak year was 1920.
Where is Tadao most popular?
The top states for the name Tadao are Hawaii (156 births), California (56 births).
How long has the name Tadao been used?
Tadao has been recorded in Social Security data since 1912, spanning 27 years of data through 1938.
What names are similar to Tadao?
Names with a similar sound or spelling include Tad, Tadeo, Tadd, Tadashi, and 4 more. These share a common prefix and are also used for boys.

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.