Alfonzo
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Meaning
“Italian-flavored spelling of Alfonso, from Visigothic Adalfuns, noble and ready, name of medieval Spanish and Portuguese kings”
How popular is Alfonzo around the world?
In the United States, 140 babies were named Alfonzo between 2020 and 2025.
Alfonzo is on the official records of the United States, Argentina, Chile, Spain and Brazil.
United States
1 in 160,000
In the United States, 140 babies were named Alfonzo between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Alfonzo has stayed rare in US records the whole time: no peak decade to name.
Births with a Social Security record. Source: U.S. Social Security Administration
Argentina
1 in 170,000
In Argentina, 4 newborns were given the name Alfonzo 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
Chile
1 in 180,000
In Chile, 1 boy was registered as Alfonzo in 2021, every accent spelling counted together.
The count never rose above 5 in a year, too few to chart.
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
Spain
1 in 1.9M
In Spain, 24 residents are named Alfonzo, ranked 25,923rd among men, with a mean age of 49.9 years.
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
Brazil
At the 2022 census, 32 people in Brazil were named Alfonzo, ranked 90,373rd, with a median age of 30.
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
Mexico City City
last on record 2020
Alfonzo is not on the 2022 record for Mexico City, where small counts are withheld at source.
The count never rose above 5 in a year, too few to chart.
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, a partial extract through 3 Mar with no cell on record for this name, is excluded. Source: Registro Civil of Mexico City, open data portal, registered given names 2000-2023
Montevideo City
last on record 2004
Alfonzo 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 3 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 1972
Alfonzo 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 Puerto Rico, England and Wales, Canada, Ireland, New Zealand, Scotland and Poland: those registries withhold small counts, so rare uses may sit below their floors.
Not on the France record: nametree keeps spellings that reached 20 births in some year, so rarer uses are not shown. Not on the Austria record for 1984 to 2025: Statistik Austria publishes every first name down to a single birth, so this name was not given there in those years (before 2010 the record covers babies with Austrian citizenship only). 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 Alfonzo
People given the name Alfonzo in the United States span the generations: the middle half were born anywhere from 1960 to 1999. Age is the one thing the name won't tell you.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Alfonzo deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Alfonzo 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 Alfonzo fits with your family’s names and surname.
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