Masculine dossier · first seen 1915
Tatsuo
Extinct
Near statistical disappearance
Peak era
1916
Peak births
57
Current vitality
Dormant
Peak generation
Greatest Generation
Quick answers about Tatsuo
How rare is Tatsuo?
Tatsuo has not appeared in SSA records since 1940. It is effectively extinct as a new baby name — no boys received it in the latest available data.
How old is the typical Tatsuo?
The median age of a living American named Tatsuo is approximately 86 years, with most bearers falling between 86 and 98 years old.
Is Tatsuo still popular?
No. Tatsuo is extinct in new births; the SSA last recorded it in 1940.
Where is Tatsuo most common?
Tatsuo has its strongest geographic signal in Hawaii, where it appears 305.5× more often than the national baseline.
1915Peak 19162025
Peak year
1916
Decline from peak
100%
2025
0
All-time
222