Oneil
Oneil was the 10405th most popular name for boys in 2025, given to 7 babies. Its best year was 1924, when it ranked 1183rd with 38 babies. Over the last ten years it has moved down 1,869 places. More babies were named Oneil in the 1920s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #10,405 boys, down 1,083 places since 2020
- Babies in 2025
- 7boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 192438 babies
- Total since 1880
- 1,774babies recorded
Oneil popularity since 1880
A few girls are given the name too: 17 since 1915.
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #10,405 | 7 |
| 2020 | #9,322 | 8 |
| 2010 | #6,610 | 13 |
| 2000 | #4,170 | 19 |
| 1990 | #3,136 | 20 |
| 1980 | #2,506 | 20 |
| 1970 | #3,741 | 8 |
| 1960 | #3,261 | 8 |
| 1950 | #1,861 | 17 |
| 1940 | #1,512 | 21 |
| 1930 | #1,874 | 17 |
| 1920 | #1,631 | 23 |
| 1910 | #1,778 | 5 |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Oneil, counting every spelling?
Oneil is the most common spelling of a name family that had 13 boys in 2025 across its spellings. Together these spellings went to 13 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Oneil | 7 | #10,405 | 38 |
| Oneal | 6 | #11,642 | 37 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Oneil?
7 of the 3,606,400 babies born in the US in 2025 were named Oneil (0.00 per 1,000 births). For a boy named Oneil born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 1,224 (of 430 pupils) would have a child named Oneil.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Oneil?
About 1,000 people born in the US named Oneil are alive today, with a median age of 34; half are between 21 and 57. That makes Oneil mostly worn by adults in their thirties to fifties. The wide spread shows a name popular in two different eras.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Names with a similar history
These names rose and fell in step with Oneil: their share of US boys followed the most similar curve since 1880. If you like Oneil, they share its era and feel.
Questions about the name Oneil
How popular is the name Oneil?
Oneil was the 10405th most popular name for boys in 2025, given to 7 babies. Its best year was 1924, when it ranked 1183rd with 38 babies. Over the last ten years it has moved down 1,869 places. More babies were named Oneil in the 1920s than in any other decade.
Is Oneil a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Oneil in the US.