Masculine dossier · first seen 1913

Teruo

Extinct Near statistical disappearance

Peak era

1927

Peak births

Current vitality

Dormant

Peak generation

Greatest Generation

Quick answers about Teruo

Teruo has not appeared in SSA records since 1935. 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 Teruo is approximately 97 years, with most bearers falling between 94 and 99 years old.

No. Teruo is extinct in new births; the SSA last recorded it in 1935.

Teruo has its strongest geographic signal in Hawaii, where it appears 223.7× more often than the national baseline.

1913Peak 19272025

Peak year

1927

Decline from peak

100%

2025

All-time

274

Teruo disappeared from SSA records in 1935 and has not been seen in 90 years. Its absence is now longer than many names' entire recorded lifespan.

Teruo peaked in 1927, when 37 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 274 Americans named Teruo since 1913.

Rarity scoreStatistical floor

Peak generationGreatest Generation

StabilityHighly era-bound

TrajectoryNear statistical disappearance

Living profile

Estimated living Americans with this name.

Median age98

Core range95–99

Playground Density Index 0.0%

Wave type

Flash Flood

A concentrated generational spike rather than a slow classic.

Geographic heartland

Hawaii

223.7× higher affinity than the national baseline.

Hawaii · 1920s 223.7×

California · 1920s 9.0×