Masculine dossier · first seen 1880
Isaiah
Stable Decline
Gradual decline from 2006
Peak era
2006
Peak births
10,459
Current vitality
Strong
Peak generation
Gen Z
Quick answers about Isaiah
How many people are named Isaiah?
An estimated 245,064 living Americans are named Isaiah.
How rare is Isaiah?
Isaiah is still widely used among babies today, with 5,267 boys receiving the name in 2025, down 49.6% from its 2006 peak.
How old is the typical Isaiah?
The median age of a living American named Isaiah is approximately 18 years, with most bearers falling between 11 and 25 years old.
Is Isaiah still popular?
Somewhat. Isaiah has been declining since its 2006 peak and registered 5,267 births in 2025.
Where is Isaiah most common?
Isaiah has its strongest geographic signal in South Carolina, where it appears 9.3× more often than the national baseline.
1880Peak 20062025
Peak year
2006
Decline from peak
49.6%
2025
5,267
All-time
254,020
Where it lives now
Isaiah is most concentrated in South Carolina — about 9.2× the national rate in the 1950s.
States where Isaiah is given more often than the national average — its present-day heartland.