Masculine dossier · first seen 1880
Isiah
Stable
Cross-generational persistence
Peak era
2001
Peak births
822
Current vitality
Fragile
Peak generation
Gen Z
Quick answers about Isiah
How many people are named Isiah?
An estimated 19,127 living Americans are named Isiah.
How rare is Isiah?
Isiah is uncommon among babies today, with 120 boys receiving the name in 2025, down 85.4% from its 2001 peak.
How old is the typical Isiah?
The median age of a living American named Isiah is approximately 26 years, with most bearers falling between 19 and 34 years old.
Is Isiah still popular?
Yes. Isiah is holding steady, with 120 births in 2025 and a consistent recent baseline.
Where is Isiah most common?
Isiah has its strongest geographic signal in South Carolina, where it appears 10.5× more often than the national baseline.
1880Peak 20012025
Peak year
2001
Decline from peak
85.4%
2025
120
All-time
24,710
Where it lives now
Isiah is most concentrated in South Carolina — about 10.1× the national rate in the 1950s.
States where Isiah is given more often than the national average — its present-day heartland.