Masculine dossier · first seen 1915
Isao
Stable Decline
Gradual decline from 1925
Peak era
1925
Peak births
20
Current vitality
Below reporting floor
Peak generation
Greatest Generation
1915Peak 19252025
Quick answers about Isao
How many people are named Isao?
An estimated 17 living Americans are named Isao.
How rare is Isao?
Isao fell below the SSA's 5-birth reporting floor in 2025. It is extremely rare as a new baby name.
How old is the typical Isao?
The median age of a living American named Isao is approximately 88 years, with most bearers falling between 10 and 96 years old.
Is Isao still popular?
Not especially. Isao has been declining since its 1925 peak and registered 0 births in 2025.
Peak year
1925
Decline from peak
100%
2025
0
All-time
246