Mosby vs Mosiah
American parents have registered 798 Mosiahs since 1880, against 14 Mosbys. Mosiah is still ahead, with 42 babies in 2025.
Babies given each name, 1880–2025
Mosby Mosiah
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 35 years in which either name was published, Mosiah for 34 years and Mosby for 1 year. The lead changed hands once.
Side by side
| Mosby | Mosiah | |
|---|---|---|
| Total US births | 14 | 798 |
| Most in one year | 9 | 48 |
| Babies in 2025 | under 5 | 42 |
| Estimated living today | 5 | 790 |
| Median age today | 9 | 9 |
| Peak year | 1920 | 2024 |
| Best rank | 2,967th boys | 2,715th boys |
| Rank in 2025 | unranked | 2,941st |
| First recorded | 1920 | 1989 |
| Girls / boys | 0 / 14 | 0 / 798 |
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.
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Social Security Administration birth records, 1880–2025, public domain. Full histories: Mosby and Mosiah.