Quick answers about Oneil
How many people are named Oneil?
An estimated 990 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 34 years, with most bearers falling between 21 and 52 years old.
Is Oneil still popular?
Not especially. Oneil has been declining since its 1924 peak and registered 7 births in 2025.
Where is Oneil most common?
Oneil has its strongest geographic signal in Louisiana, where it appears 13.8× more often than the national baseline.
1892Peak 19242025
Where it lives now
Oneil is most concentrated in New York — about 5.3× the national rate in the 2000s.
States where Oneil is given more often than the national average — its present-day heartland.
3×+
2×+
1.5×+
1.2×+
~ national
