Masculine dossier · first seen 1892
Oneil
Stable Decline
Gradual decline from 1924
Peak era
1924
Peak births
38
Current vitality
Rare
Peak generation
Greatest Generation
1892Peak 19242025
Quick answers about Oneil
How many people are named Oneil?
An estimated 1,059 living Americans are named Oneil.
How rare is Oneil?
Oneil is very rare among babies today, with 7 boys receiving the name in 2025, down 81.6% from its 1924 peak.
How old is the typical Oneil?
The median age of a living American named Oneil is approximately 35 years, with most bearers falling between 22 and 60 years old.
Is Oneil still popular?
Not especially. Oneil has been declining since its 1924 peak and registered 7 births in 2025.
Peak year
1924
Decline from peak
81.6%
2025
7
All-time
1,757