Alonso
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Meaning
noble and ready (Spanish variant of Alfonso); famously borne by Alonso Quijano, Don Quixote's true identity
The story
Alonso is the Spanish variant of Alfonso, and Behind the Name is careful about what sits underneath. The standard reading runs through the Visigothic name Athalafuns, noble and ready, from Gothic athals, noble, and funs, ready. But the entry itself notes an old Latin spelling, Adefonsus, that has led scholars to theorize a different first element, perhaps hathus, battle, and concedes that two or more names may have merged into one form. Kings of Asturias, Leon, Castile, Aragon and Portugal carried the parent name from the eighth century on. The variant is famously borne in literature by Alonso Quijano, the country gentleman underneath Don Quixote. The American record picks Alonso up in the 1910s, counts 3,225 boys in the 2000s and 3,311 across the 2010s, and stands at 1,894 so far this decade. Brazil's census adds 6,974 more, nearly all of them male, with a median age of 52.
How popular is Alonso around the world?
In the United States, 1,894 babies were named Alonso between 2020 and 2025. In Chile, 1,269 boys were registered as Alonso in 2021, every accent spelling counted together.
Alonso is on the official records of the United States, Chile, Mexico City, Spain, Puerto Rico, Argentina, Austria, Brazil, Canada, England and Wales and France.
United States
1 in 12,000
In the United States, 1,894 babies were named Alonso between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Alonso peaked in the 2000s and the 2020s in nearly equal measure.
Births with a Social Security record. Source: U.S. Social Security Administration
Chile
1 in 140
In Chile, 1,269 boys were registered as Alonso in 2021, every accent spelling counted together.
share of that year’s name registrations
First-name registrations with Chile’s civil registry by year of registration, 1920–2021, counted as spelling groups (Sofía, Sofia and Sofìa are one name, shown with its most-registered spelling); the registry withholds nothing, nametree keeps the groups that reached 5 registrations in some year, and shares divide by every registration of the year. Source: Servicio de Registro Civil e Identificación (Chile) via the guaguas package, first-name registrations 1920-2021
Mexico City City
1 in 450
In Mexico City, there were 263 registrations of Alonso in 2022.
share of that year’s registrations in the city
Civil-registry acts in Mexico City by registration year. Counts are lower bounds (names under 6 in a month and borough are removed at source) and count name-instances, not people; compound names are split, so “Maria Jose” counts under each part. 2023 (10 registrations through 3 Mar) is excluded as partial. Source: Registro Civil of Mexico City, open data portal, registered given names 2000-2023
Spain
#72 · 2024
In Spain, 17,998 residents are named Alonso, the 165th most common name among men, with a mean age of 29.4 years.
In Spain, Alonso was the 72nd most common name among boys born in 2024.
Residents of Spain on 1 January 2025. Spain publishes how old a name’s living bearers are, not a birth series, so there is no year chart. Source: INE (Spain), Censo de Población anual, 1 January 2025
Puerto Rico
1 in 1,300
In Puerto Rico, 14 babies were named Alonso in 2025, and 210 have carried the name since 1998.
share of that year’s births on record
First given name only, from Social Security records of births in Puerto Rico; any name-sex-year under 5 births is withheld at source. Shares divide by the Puerto Rico Demographic Registry’s count of births on the island; the 2025 count is provisional. Source: U.S. Social Security Administration, territory name file (Puerto Rico)
Argentina
1 in 2,800
In Argentina, 236 newborns were given the name Alonso in 2024.
share of that year’s name registrations
Given-name components of births in Argentina 2012–2024; national cells are lower bounds and no sex split is published. Source: RENAPER (Argentina), Dirección Nacional de Población, given names 2012-2024
Austria
1 in 15,000
In Austria, 5 boys named Alonso were born in 2025, the 720th most common name among boys that year, spellings that differ only by special characters counted together.
The count never rose above 5 in a year, too few to chart.
Live births in Austria by year of birth, 1984–2025, from Statistik Austria’s first-name statistics; spellings that differ only by special characters are counted together (umlauts stay apart), every name down to a single birth is published, and the count covers babies with Austrian citizenship only until 2009, every baby from 2010, and from 2015 also births abroad to mothers living in Austria. Shares divide by Statistik Austria’s count of live births from 2010, and before that by the file’s own total for the year. Source: Statistik Austria - data.statistik.gv.at (OGDEXT_VORNAMEN_1, updated 2026-07-09)
Brazil
1 in 29,000
At the 2022 census, 6,974 people in Brazil were named Alonso, ranked 2,172nd, with a median age of 52.
Among people named Alonso living in Brazil at the 2022 census, more were born in the 1960s than in any other decade.
people alive at the 2022 census, by decade of birth
The census also counted 212 born between 2020 and August 2022, too recent a span to chart. People alive and resident in Brazil at the 2022 census, a living-population count, not births; names under 20 are withheld at source. Source: IBGE, Censo Demográfico 2022
Canada
1 in 30,000
In Canada, 12 boys named Alonso were born in 2024, ranked 1,698th among boys that year.
share of that year’s name registrations
First given names from provincial and territorial vital statistics across Canada; any name-sex-year under 5 is excluded at source, and small Quebec counts carry a randomized adjustment made at source. Shares divide by Statistics Canada’s count of live births for the year; the 2024 count is preliminary. Source: Statistics Canada, first names at birth (table 17-10-0147-01)
England and Wales
1 in 45,000
In England and Wales, 13 boys named Alonso were born in 2025, ranked 1,897th among boys that year.
share of that year’s name registrations
Birth registrations in England and Wales (not the whole UK); exact spellings are counted separately, and any spelling under 3 in a year is withheld at source. Source: Office for National Statistics, baby names in England and Wales
France
1 in 64,000
In France, about 10 boys named Alonso were born in 2025, ranked 2,820th among boys that year.
share of that year’s births on record
Births in France by year of birth, from INSEE’s fichier des prénoms (1900–2025; Mayotte from 2012); exact spellings count separately (Léo and Leo are different names), any spelling under 3 in a year and sex is withheld at source, every count is rounded to the nearest 5 at source, and nametree keeps the spellings that reached 20 in some year. Shares divide by INSEE’s count of births in France from 1957, and before that by the file’s own total for the year; INSEE says the file is not complete before 1946. Source: Insee, fichier des prénoms (last updated 2026-07-16)
Montevideo City
last on record 2010
Alonso is not on the 2011 record for Montevideo, whose registry withholds nothing, so the spelling was not given there that year.
The count never rose above 1 in a year, too few to chart.
Births in the department of Montevideo (not all of Uruguay) by first name and year of birth, 1940–2011, from the city’s civil registry, which writes names in capitals, almost always without accents; counted as spelling groups (accent and punctuation variants merged), nothing is withheld at source, and 2012 is excluded as a partial year. Source: Servicio de Registro Civil, Intendencia de Montevideo, Partidas de Registro Civil de Montevideo (Licencia de Datos Abiertos - Uruguay); 2012 dropped as partial
South Australia
last on record 2016
Alonso is not on the 2017 record for South Australia, whose registry publishes every name given that year.
The count never rose above 2 in a year, too few to chart.
Births registered in South Australia (not all of Australia) by first name and year of registration, 1944–2017, from the state’s Births, Deaths and Marriages registry, which publishes every name down to a single birth in capitals; a spelling its export repeats inside a year is counted once, and from 2018 only a top 100 is published, so the series ends at 2017. Source: Consumer and Business Services (South Australia), popular baby names
Not on the record in Ireland, New Zealand, Scotland and Poland: those registries withhold small counts, so rare uses may sit below their floors.
Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
When you meet Alonso
Most people given the name Alonso in the United States are teenagers or young adults today.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
Where Alonso travels
Mexican American · A steady Spanish-language heritage choice in Mexican American families.
Keep exploring
The Alonso deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Alonso truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Alonso fits with your family’s names and surname.
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