Ibai
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Meaning
river (Basque); one of the plainest and most-used Basque nature words in the modern name pool
How popular is Ibai around the world?
Ibai does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick. In Spain, 9,224 residents are named Ibai, the 279th most common name among men, with a mean age of 17.9 years.
Ibai is on the official records of Spain, Mexico City and Argentina.
United States
under 5 a year
Ibai does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick.
Births with a Social Security record. Source: U.S. Social Security Administration
Spain
1 in 4,900
In Spain, 9,224 residents are named Ibai, the 279th most common name among men, with a mean age of 17.9 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
Mexico City City
1 in 24,000
In Mexico City, there were 5 registrations of Ibai in 2022.
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
Argentina
1 in 95,000
In Argentina, 7 newborns were given the name Ibai 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
Montevideo City
last on record 2010
Ibai 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
Not on the record in Puerto Rico, England and Wales, Canada, Ireland, New Zealand and Scotland: those registries withhold small counts, so rare uses may sit below their floors.
Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown. Not on the France record: nametree keeps spellings that reached 20 births in some year, so rarer uses are not shown. Not on the South Australia record for 1944 to 2017: that registry withholds nothing, so this spelling was not given there in those years.
Keep exploring
The Ibai deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Ibai 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 Ibai fits with your family’s names and surname.
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