Billy

In the United States, 1,322 babies were named Billy between 2020 and 2025.

Shape drawn from US Social Security baby-name records. Billy peaked in the 1930s.

Births with a Social Security record. Source: U.S. Social Security Administration

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In Ireland, 122 boys named Billy were born in 2025, the 39th most common name among boys that year.

share of that year’s name registrations

Exact registered spellings from Irish vital statistics; any name under 3 in a year is withheld at source, and accented spellings (fadas) are recorded reliably only from 2018. Source: Central Statistics Office (Ireland), Irish babies' names

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In South Australia, 16 boys were registered as Billy in 2017.

share of that year’s name registrations

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

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In New Zealand, 49 boys named Billy were registered in 2025.

share of that year’s name registrations

First given names from New Zealand birth registrations, grouped by registration year; any name under 10 in a year is excluded at source. Shares divide by Stats NZ’s count of births registered to mothers living in New Zealand, under 1% below the registry’s own count. Source: Department of Internal Affairs (New Zealand), baby name popularity over time

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In England and Wales, 481 boys named Billy were born in 2025, the 110th most common name 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

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In New South Wales, 152 boys named Billy were registered in 2025, ranked 44th in that year’s top 100 for boys.

share of that year’s top-100 registrations

New South Wales (not all of Australia) publishes only each year’s 100 most popular names per sex, so a missing year means below that top 100, not rare. Source: NSW Registry of Births, Deaths and Marriages, popular baby names

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In Scotland, 17 boys named Billy were registered in 2024, the 234th most common name among boys that year.

share of that year’s name registrations

Births registered in Scotland; different spellings count separately but accents are merged at source, and any spelling under 3 in total is suppressed. Source: National Records of Scotland, babies' first names

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In Canada, 73 boys named Billy were born in 2024, the 428th most common name 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)

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In France, about 70 boys named Billy were born in 2025, the 613th most common name 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)

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In Mexico City, there were 3 registrations of Billy 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

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In Chile, 3 boys were registered as Billy 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

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In Austria, 1 boy named Billy was born in 2025, ranked 1,842nd among boys that year, spellings that differ only by special characters counted together.
The count never rose above 2 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)

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In Poland, 2 boys named Billy were born in 2025, the 705th most common name among boys that year.
The count never rose above 2 in a year, too few to chart.

First names given to children born in Poland by year of birth, 2000–2025, from the PESEL population register (Ministry of Digital Affairs); exact spellings count separately (Łukasz and Lukasz are different names), names given fewer than 5 times in a year were left off the list through 2012 and fewer than 2 times from 2013, and the register also counts children born abroad, so its yearly sums run above Poland’s live births. Shares divide by the register’s own published total for the year, never by births. Source: Ministry of Digital Affairs, PESEL register (dane.gov.pl)

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At the 2022 census, 657 people in Brazil were named Billy, ranked 11,050th, with a median age of 30.
Among people named Billy living in Brazil at the 2022 census, more were born in the 1990s than in any other decade.

people alive at the 2022 census, by decade of birth

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

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In Spain, 121 residents are named Billy, ranked 7,073rd among men, with a mean age of 32.1 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

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Billy is not on the 2024 record for Argentina, where small counts are withheld at source.
The count never rose above 5 in a year, too few to chart.

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

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Billy 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

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Billy is not on the 2025 record for Puerto Rico, which withholds births under 5, and 81 babies have carried the name there 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)

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