Isaias vs Isaiha
American parents have registered 18,644 Isaiases since 1880, against 645 Isaihas. Isaias is still ahead, with 755 babies in 2025.
Babies given each name, 1880–2025
Isaias Isaiha
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
Isaias has been the commoner name in every year either was published, 1915 to 2025. The lead has never changed hands.
The closest they came was 1997, when Isaias had 253 and Isaiha had 47.
Side by side
| Isaias | Isaiha | |
|---|---|---|
| Total US births | 18,644 | 645 |
| Most in one year | 755 | 47 |
| Babies in 2025 | 755 | 5 |
| Estimated living today | 18,000 | 630 |
| Median age today | 15 | 22 |
| Peak year | 2025 | 1997 |
| Best rank | 426th boys | 1,933rd boys |
| Rank in 2025 | 426th | 12,008th |
| First recorded | 1915 | 1988 |
| Girls / boys | 0 / 18,644 | 0 / 645 |
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 Isaihas alive today are over 22; half the Isaiases are over 15. That is 7 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Isaias Texas (3.4×), California (3.0×), Arizona (2.9×)
- Isaiha Texas (7.7×), California (2.2×)
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: Isaias and Isaiha.