Baby Names US
boys' name ★ peaked 1924

Oneil

Gender Boy · 1% girls Rank 2025 #10,405
Rank 2025
#10,405
among boys · ↓1,601 vs 2024
Babies in 2025
7
named Oneil
How common
1 in 244,011
boys born in 2025
Peak year
1924
43 babies
All-time total
1,774
#3,574 all-time among boys
First recorded
1892
in Social Security records

Oneil popularity over time

1,774 babies have been named Oneil since 1892, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.010.030.040.0518801900192019401960198020002020BoysGirls
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – 5 5 1 – #1,205
1900s – – – – – –
1910s 12 115 127 13 – #1,589
1920s 5 264 269 27 +112% #1,183
1930s – 185 185 19 -31% #1,447
1940s – 171 171 17 -8% #1,512
1950s – 142 142 14 -17% #1,692
1960s – 85 85 9 -40% #2,122
1970s – 83 83 8 -2% #2,744
1980s – 149 149 15 +80% #2,406
1990s – 198 198 20 +33% #2,628
2000s – 189 189 19 -5% #3,814
2010s – 125 125 13 -34% #4,493
2020s (to 2025) – 46 46 8 -39% #8,804

The story of Oneil

Oneil is rare for boys in the United States, ranked #10,405 in 2025 with 7 babies given the name. It is currently holding steady compared with a decade ago.

Since 1892, 1,774 American babies have been named Oneil. Its peak came in 1924, when 43 newborns received the name, the signature sound of the 1920s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Oneil stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Oneil?

The median living Oneil is about 35 years old; half are between 21 and 59. An estimated 1,100 people named Oneil are alive in the United States today.

median 35 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Oneil year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 – – 7 #10,405
2024 – – 9 #8,804
2023 – – 8 #9,523
2022 – – 8 #9,606
2021 – – 6 #11,768
2020 – – 8 #9,322
2019 – – 11 #7,497
2018 – – 13 #6,605
2017 – – 14 #6,252
2016 – – 14 #6,264
2015 – – 9 #8,536
2014 – – 11 #7,411
2013 – – 5 #13,541
2012 – – 22 #4,493
2011 – – 13 #6,489
2010 – – 13 #6,610
2009 – – 14 #6,338
2008 – – 17 #5,425
2007 – – 24 #4,215
2006 – – 20 #4,639
2005 – – 16 #5,212
2004 – – 22 #4,098
2003 – – 18 #4,570
2002 – – 17 #4,651
2001 – – 22 #3,814
2000 – – 19 #4,170
1995 – – 27 #2,737
1990 – – 20 #3,136
1985 – – 12 #3,746
1980 – – 20 #2,506
1975 – – 9 #3,856
1970 – – 8 #3,741
1965 – – 8 #3,173
1960 – – 8 #3,261
1955 – – 16 #2,025
1950 – – 17 #1,861
1945 – – 18 #1,613
1940 – – 21 #1,512
1935 – – 22 #1,478
1930 – – 17 #1,874
1925 – – 29 #1,386
1920 – – 23 #1,631
1915 5 #4,791 20 #1,589
1910 – – 5 #1,778
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Oneil, drawn from the same Social Security data as the charts above.

How old is the average Oneil?

The median living Oneil is about 35 years old. Half of all living Oneils are between 21 and 59 years old.

How many people named Oneil are alive today?

An estimated 1,100 people named Oneil are alive in the United States, based on 1,774 recorded births and Social Security life tables.

How popular is the name Oneil in 2025?

Oneil ranked #10,405 among boys' names in the United States in 2025, with 7 babies given the name, according to Social Security Administration data.

How many people are named Oneil?

1,774 babies have been named Oneil in the United States since 1892, based on Social Security card applications.

When was the name Oneil most popular?

Oneil peaked in 1924, when 43 newborns received the name.

Is Oneil a boy or girl name?

Oneil is overwhelmingly a boy's name: 99% of babies with the name.

Is the name Oneil rising or falling?

Oneil has been roughly stable over the past decade.

Names like Oneil

Names that sound and feel close to Oneil: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Oneil with similar names → More names starting with O →