Masculine dossier · first seen 1914

Sadao

Extinct Near statistical disappearance

Peak era

1926

Peak births

Current vitality

Dormant

Peak generation

Greatest Generation

Quick answers about Sadao

Sadao has not appeared in SSA records since 1934. It is effectively extinct as a new baby name — no boys received it in the latest available data.

The median age of a living American named Sadao is approximately 95 years, with most bearers falling between 93 and 97 years old.

No. Sadao is extinct in new births; the SSA last recorded it in 1934.

Sadao has its strongest geographic signal in Hawaii, where it appears 268.7× more often than the national baseline.

1914Peak 19262025

Peak year

1926

Decline from peak

100%

2025

All-time

244

Sadao disappeared from SSA records in 1934 and has not been seen in 91 years. Its absence is now longer than many names' entire recorded lifespan.

Sadao peaked in 1926, when 22 boys were given the name.

No boys were recorded with this name in 2025 — at least not five of them (the SSA's reporting floor).

Down 100% from its peak.

In all, the Social Security Administration has recorded about 244 Americans named Sadao since 1914.

Rarity scoreStatistical floor

Peak generationGreatest Generation

StabilityHighly era-bound

TrajectoryNear statistical disappearance

Living profile

Estimated living Americans with this name.

Median age96

Core range93–100

Playground Density Index 0.0%

Wave type

Flash Flood

A concentrated generational spike rather than a slow classic.

Geographic heartland

Hawaii

268.7× higher affinity than the national baseline.

Hawaii · 1920s 268.7×