Letha vs Letti
American parents have registered 19,162 Lethas since 1880, against 599 Lettis. But in 2025 it was Letti that was commoner, 36 babies to fewer than five.
Babies given each name, 1880–2025
Letha Letti
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 141 years in which either name was published, Letha for 125 years and Letti for 16 years. The lead changed hands once.
Side by side
| Letha | Letti | |
|---|---|---|
| Total US births | 19,162 | 599 |
| Most in one year | 473 | 58 |
| Babies in 2025 | under 5 | 36 |
| Estimated living today | 5,500 | 600 |
| Median age today | 67 | 6 |
| Peak year | 1918 | 2021 |
| Best rank | 293rd girls | 2,892nd girls |
| Rank in 2025 | unranked | 3,975th |
| First recorded | 1880 | 1960 |
| Girls / boys | 19,137 / 25 | 599 / 0 |
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 Lethas alive today are over 67; half the Lettis are over 6. That is 61 years between them: two names in use at the same time, worn by two different generations.
Compare something else
Related comparisons
Social Security Administration birth records, 1880–2025, public domain. Full histories: Letha and Letti.