Alonso
Alonso was the 785th most popular name for boys in 2025, given to 324 babies. Its best year was 2002, when it ranked 622nd; the most babies were born in 2010 (380). Over the last ten years it has moved down 52 places. More babies were named Alonso in the 2010s than in any other decade.
Meaning variant of Alfonso (noble + ready) · Spanish, Germanic
Say it uh-LAHN-zoh /əˈlɑnzoʊ/
- Rank in 2025
- #785 boys, down 1 places since 2020
- Babies in 2025
- 324boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 2010380 babies
- Total since 1880
- 12,231babies recorded
What does the name Alonso mean?
Alonso is a Spanish form of Alfonso, the name of many kings of León, Castile, Aragon and Portugal. Alfonso is of Visigothic origin and is usually explained from Germanic elements such as adal 'noble' (or hild 'battle') and funs 'ready, eager'. Which first element is right is not certain. Alonso is also a common Spanish surname.
adal (Old High German, “noble”)funs (Gothic / Old High German, “ready, eager”)
How sure is this? Probable. The Germanic elements are standard reconstructions; the first element is debated.
Pronunciation: Spanish pronunciation is ah-LOHN-soh.
Related names: Alfonso, Alonzo, Alphonse.
See also: Germanic names.
Sources for this meaning
- Wiktionary, entry 'Alonso', Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- Wiktionary, entry 'Alfonso', Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- Dictionary of Medieval Names from European Sources, ed. S. L. Uckelman, Edition 2023 no. 1, s.v. 'Alphonse', DMNES (Durham University)
Alonso popularity since 1880
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #785 | 324 |
| 2020 | #784 | 297 |
| 2010 | #636 | 380 |
| 2000 | #639 | 285 |
| 1990 | #812 | 157 |
| 1980 | #1,238 | 55 |
| 1970 | #1,314 | 40 |
| 1960 | #1,728 | 22 |
| 1950 | #2,112 | 13 |
| 1940 | — | — |
| 1930 | #2,781 | 9 |
| 1920 | #2,971 | 9 |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Alonso, counting every spelling?
Alonso has no other common spelling that sounds the same. Counting every name's spellings together, it ranks #766 for boys in 2025, against #785 on the official list.
How many kids will share the name Alonso?
324 of the 3,606,400 babies born in the US in 2025 were named Alonso (0.09 per 1,000 births). For a boy named Alonso born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 26 (of 430 pupils) would have a child named Alonso.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Alonso?
About 11,700 people born in the US named Alonso are alive today, with a median age of 18; half are between 10 and 28. That makes Alonso mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Alonso by state
How common Alonso was among boys born in each state in 2021–2025. It is notably more common than nationally in Arizona (2.5×), Texas (2.3×), California (2.2×), Colorado (1.7×), Illinois (1.5×). In 27 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Alonso: their share of US boys followed the most similar curve since 1880. If you like Alonso, they share its era and feel.
Middle names for Alonso · Sibling names for Alonso
Questions about the name Alonso
What does Alonso mean?
Alonso means “variant of Alfonso (noble + ready)” (Spanish, Germanic origin). Certainty: probable.
How popular is the name Alonso?
Alonso was the 785th most popular name for boys in 2025, given to 324 babies. Its best year was 2002, when it ranked 622nd; the most babies were born in 2010 (380). Over the last ten years it has moved down 52 places. More babies were named Alonso in the 2010s than in any other decade.
Is Alonso a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Alonso in the US.
Where is Alonso most popular?
In 2021–2025, Alonso was most common in Arizona (0.47 per 1,000 boys), followed by Texas and California.