Oneil vs Onesimo
American parents have registered 1,774 Oneils since 1880, against 594 Onesimos. Oneil is still ahead, with 7 babies in 2025.
Babies given each name, 1880–2025
Oneil Onesimo
Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.
Who was ahead
Of the 116 years in which either name was published, Oneil for 110 years and Onesimo for 6 years. The lead changed hands 12 times.
- 1892–2025 Oneil ahead, apart from 6 short spells
6 shorter spells of a year or two are folded into the spans above rather than listed separately.
Side by side
| Oneil | Onesimo | |
|---|---|---|
| Total US births | 1,774 | 594 |
| Most in one year | 43 | 16 |
| Babies in 2025 | 7 | under 5 |
| Estimated living today | 1,000 | 400 |
| Median age today | 34 | 40 |
| Peak year | 1924 | 1982 |
| Best rank | 1,169th boys | 2,831st boys |
| Rank in 2025 | 9,714th | unranked |
| First recorded | 1892 | 1917 |
| Girls / boys | 17 / 1,757 | 0 / 594 |
A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.
Which name is older
Half of the Onesimos alive today are over 40; half the Oneils are over 34. That is 6 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
How much commoner the name is in that state than it is nationally, from births recorded since 1910.
Compare something else
Related comparisons
Social Security Administration birth records, 1880–2025, public domain. Full histories: Oneil and Onesimo.