Alfonso
The boy's name Alfonso has been in the national records since 1881, with 41,579 births to its name. In 2025 it ranked 1,012th. About 29,000 Alfonsos are alive in the United States today, and half of them are over 38.
Popularity, 1880–2025
girls named Alfonso boys named Alfonso
By the numbers
- Total US births
- 41,579
- Estimated living today
- 29,000
- Median age today
- 38
- Peak year
- 1991
- Best rank
- 395th
- Rank in 2025
- 1,012th
- First recorded
- 1881
- Girls / boys
- 115 / 41,464
How old the living Alfonsos are
born that year still alive today
Of the 41,579 babies given the name since 1881, about 29,000 are alive — 70 in every hundred. Roughly 4,900 of them are children and 4,700 are 65 or over. The dotted line is the median: half were born before 1987 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Where the name comes from
Origin Germanic languages
From Spanish Alfonso and Italian Alfonso.
Etymology from Wiktionary, used under CC BY-SA 4.0.
Notable Alfonsos
- Alfonso XIII (1886–1941)King of Spain from 1886 to 1931
- Alfonso X of Castile and Leon (1221–1284)King of Castile from 1252 to 1284
- Alfonso Cuarón (born 1961)Mexican filmmaker
- Alfonso XII of Spain (1857–1885)king of Spain from 1874 to 1885
- Alfonso García Robles (1911–1991)Mexican diplomat and politician
- Alfonso V of Aragon (1396–1458)King of Aragon from 1416 to 1458
- Alfonso VI of León and Castile (1040–1109)King of León (1065 to 1109), of Castile (1072 to 1109), and of Galicia (1071 to 1109)
- Alfonso VIII of Castile (1155–1214)King of Castile
People named Alfonso with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Alfonso is most common
Relative to how many babies each state records, Alfonso is most concentrated in New Mexico (6.7×), Arizona (3.5×), Texas (3.3×), California (3.1×).
Total births recorded in each state since 1910. Browse names by state.
Names of 1991
The most popular boys’ names the year Alfonso peaked:
Alfonso elsewhere
| Country | Spelling | Births | Best rank |
|---|---|---|---|
| Italy boys | Alfonso | 5,033 | — |
| Spain boys | Alfonso | 1,341 | 89th |
| France boys | Alfonso | 600 | 414th |
| England and Wales boys | Alfonso | 153 | 2,097th |
| Switzerland boys | Alfonso | 23 | 1,008th |
Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.
Alfonso: births by region
| Region | Country | Spelling | Births | Share of the region | Best rank |
|---|---|---|---|---|---|
| German boys | Switzerland | Alfonso | 16 | 0.001% | 893rd |
| French boys | Switzerland | Alfonso | 5 | 0.001% | 677th |
| Italian boys | Switzerland | Alfonso | 2 | 0.003% | 180th |
Parts of a country counted above, not extra births. The share is what makes the regions comparable: they differ in size by a factor of three hundred.
Alfonso among the living
How many people each country's register counts under the name, rather than how many were given it in any one year. Each register was read on one date, and they are not the same date.
| Country | Spelling | First forename | Any forename |
|---|---|---|---|
| Finland boys | Alfonso | 15 | 52 |
A count of people on a register – Finland on 4 August 2026 – and not of births, so it cannot be compared with the figures above. Names with very few bearers are withheld, and a dash in the first-forename column means the register would not say rather than that nobody goes by it.
Where Alfonso lives in Spain
Not a count of births but of people: 77,574 men called Alfonso were living in Spain on 1 January 2025, of every age, born in any year. Where they live is not spread evenly.
Men: the provinces where it is densest
| Province | Spelling | People | Per thousand | Place there |
|---|---|---|---|---|
| Córdoba | Alfonso | 2,858 | 7.562 | 30 |
| Jaén | Alfonso | 2,053 | 6.710 | 38 |
| Ciudad Real | Alfonso | 1,525 | 6.211 | 37 |
| Murcia | Alfonso | 4,907 | 6.173 | 32 |
| Albacete | Alfonso | 981 | 5.002 | 46 |
| Zamora | Alfonso | 405 | 4.940 | 46 |
Listed in 52 of Spain's 52 provinces. The rate is the source's own, not a share worked out here.
Related names
Alfonso against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.