Blas
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Meaning
“Spanish form of Blaise”
How popular is Blas around the world?
In the United States, 112 babies were named Blas between 2020 and 2025. In Argentina, 203 newborns were given the name Blas in 2024.
Blas is on the official records of the United States, Argentina, Spain, Chile and Mexico City.
United States
1 in 190,000
In the United States, 112 babies were named Blas between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Blas 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 3,300
In Argentina, 203 newborns were given the name Blas 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
Spain
1 in 4,500
In Spain, 9,966 residents are named Blas, the 264th most common name among men, with a mean age of 60.1 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
Chile
1 in 89,000
In Chile, 2 boys were registered as Blas 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 120,000
In Mexico City, there was 1 registration of Blas 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, 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 2010
Blas 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 4 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 1963
Blas is not on the 2017 record for South Australia, whose registry publishes every name given that year.
The count never rose above 1 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 Blas
People given the name Blas in the United States span the generations: the middle half were born anywhere from 1960 to 2009. 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.
Keep exploring
The Blas deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Blas 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 Blas fits with your family’s names and surname.
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