Oneill

Oneill is the 673rd most common surname in the United States, shared by 49,365 people at the 2020 census. That is about one person in 6,055.

By the numbers

People: 49,365
Rank: 673rd
How common: 1 in 6,055
Per 100,000: 16.5

Who bears the name

How people with the surname Oneill described their own race and Hispanic origin at the 2020 census:

White, not Hispanic 89.8%
Hispanic or Latino 5.2%
Two or more races, not Hispanic 2.8%
Black, not Hispanic 1.1%
Asian or Pacific Islander, not Hispanic 0.9%
American Indian or Alaska Native, not Hispanic 0.2%

Notable people called Oneill

Eugene O'Neill (1888–1953)American playwright
Ed O'Neill (born 1946)American actor
Martin O'Neill (born 1952)Northern Irish association football player and manager
Peter O'Neill (born 1965)Prime Minister of Papua New Guinea from 2011 to 2019
Michelle O'Neill (born 1977)First Minister of Northern Ireland since 2024
Oona O'Neill (1925–1991)American-British actress
Michael O'Neill (born 1969)Northern Irish association football manager
Jennifer O'Neill (born 1948)American actress and model

People named Oneill with articles in the most Wikipedia languages. Data from Wikidata (CC0).

Surnames like Oneill

Try it on yourself

Source: US Census Bureau, Frequently Occurring Surnames, 2020. The Census describes the file as the surnames borne by 100 or more people; rarer names are not published. The line is not quite exact, and 617 published names come in under it, the smallest at 92 people. Race and Hispanic origin are self-reported. Rates are worked out against the 298.9 million people the file's own figures are calculated on, which is fewer than the census counted in all: the difference is everyone whose surname was too rare to publish.