Alfonso vs Alfonza
American parents have registered 41,579 Alfonsos since 1880, against 1,714 Alfonzas. Alfonso is still ahead, with 223 babies in 2025.
Babies given each name, 1880–2025
Alfonso Alfonza
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
Alfonso has been the commoner name in every year either was published, 1881 to 2025. The lead has never changed hands.
The closest they came was 1945, when Alfonso had 261 and Alfonza had 36.
Side by side
| Alfonso | Alfonza | |
|---|---|---|
| Total US births | 41,579 | 1,714 |
| Most in one year | 580 | 47 |
| Babies in 2025 | 223 | under 5 |
| Estimated living today | 29,000 | 960 |
| Median age today | 38 | 63 |
| Peak year | 1991 | 1957 |
| Best rank | 395th boys | 1,117th boys |
| Rank in 2025 | 1,012th | unranked |
| First recorded | 1881 | 1911 |
| Girls / boys | 115 / 41,464 | 0 / 1,714 |
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 Alfonzas alive today are over 63; half the Alfonsos are over 38. That is 25 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Alfonso New Mexico (6.7×), Arizona (3.5×), Texas (3.3×)
- Alfonza Alabama (16.8×), North Carolina (11.8×), Georgia (7.3×)
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: Alfonso and Alfonza.