Boy · Name family
William
5,330,770births recorded
28Countries
17Variants
1880Peak · United States
#6Québec 2025
William is a boy name family recorded 5,330,770 times in 28 countries since 1880. It ranks highest today in Québec (#6 in 2025). Its all-time peak was in the United States in 1880, at 4,748.9 births per 100,000. Elsewhere it is mostly given as Guillaume (France), Guillermo (Argentina).
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
Which form wins where
Births per 100,000 newborns for each form, in the selected country.
Rank in countries that publish top lists only
All forms of William
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| William | English | 4,215,725 | 🇺🇸 United States | #9 | 1880 | ▼ 26 % |
| William | English | 147,707 | 🇨🇦 Ontario | #12 | 1920 | ▼ 43 % |
| William | English | 119,438 | 🏴 England & Wales | #25 | 2002 | ▼ 56 % |
| William | English | 79,960 | 🇫🇷 France | #126 | 1999 | ▼ 35 % |
| William | English | 32,212 | 🇦🇺 New South Wales | #11 | 2009 | – |
| William | English | 28,614 | 🇨🇦 Québec | #6 | 2002 | ▼ 21 % |
| Guillermo | Spanish | 187,473 | 🇦🇷 Argentina | #330 | 1968 | ▼ 47 % |
| Guillermo | Spanish | 32,148 | 🇺🇸 United States | #901 | 1996 | ▼ 24 % |
| Guillermo | Spanish | 25,125 | 🇪🇸 Spain | #47 | 2007 | – |
| Guillermo | Spanish | 5,751 | 🇺🇾 Montevideo (Uruguay) | #48 | 1991 | ▼ 35 % |
| Guillermo | Spanish | 1,610 | 🇪🇸 Catalonia | #211 | 1998 | ▼ 7 % |
| Guillermo | Spanish | 350 | 🇫🇷 France | – | 1972 | – |
| Guillaume | French | 222,980 | 🇫🇷 France | #953 | 1983 | ▼ 76 % |
| Guillaume | French | 17,351 | 🇨🇦 Québec | #607 | 1984 | ▼ 85 % |
| Guillaume | French | 5,515 | 🇧🇪 Belgium | #500 | 1997 | ▼ 73 % |
| Guillaume | French | 749 | 🇨🇭 Switzerland | #1124 | 2001 | ▼ 79 % |
| Guillaume | French | 342 | 🇺🇸 United States | – | 1997 | – |
| Guillaume | French | 269 | 🇨🇦 Ontario | – | 1990 | – |
| Guillem | Catalan | 7,945 | 🇪🇸 Catalonia | #40 | 1999 | ▼ 40 % |
| Guillem | Catalan | 4,771 | 🇪🇸 Spain | – | 2007 | – |
| Guillem | Catalan | 815 | 🇫🇷 France | – | 2011 | – |
| Guillem | Catalan | 9 | 🇦🇷 Argentina | – | 1983 | – |
| Guilhem | Catalan | 8,360 | 🇫🇷 France | #1097 | 1998 | ▼ 69 % |
| Guilhem | Catalan | 30 | 🇧🇪 Belgium | – | 2003 | – |
| Guilherme | Portuguese | 6,469 | 🇵🇹 Portugal | #16 | 2019 | – |
| Guilherme | Portuguese | 522 | 🇺🇸 United States | #8910 | 2006 | ▼ 25 % |
| Guilherme | Portuguese | 435 | 🇫🇷 France | #3890 | 2016 | ▼ 69 % |
| Guilherme | Portuguese | 239 | 🇨🇭 Switzerland | #514 | 2014 | ▲ 30 % |
| Guilherme | Portuguese | 191 | 🇦🇷 Argentina | – | 1986 | – |
| Guilherme | Portuguese | 191 | 🏴 England & Wales | – | 2015 | – |
| Willem | French | 2,840 | 🇺🇸 United States | #2572 | 2003 | ▼ 15 % |
| Willem | French | 1,310 | 🇫🇷 France | #2028 | 2007 | ▼ 6 % |
| Willem | French | 1,286 | 🇧🇪 Belgium | #463 | 1999 | ▼ 13 % |
| Willem | French | 533 | 🏴 England & Wales | #3240 | 2008 | ▼ 59 % |
| Willem | French | 467 | 🇨🇦 Ontario | #964 | 2007 | ▼ 37 % |
| Willem | French | 154 | 🇨🇦 British Columbia | – | 2013 | – |
| Wilhelm | German | 3,126 | 🇸🇪 Sweden | #108 | 2011 | ▶ 1 % |
| Wilhelm | German | 1,828 | 🇺🇸 United States | #4050 | 1880 | ▲ 37 % |
| Wilhelm | German | 570 | 🇫🇷 France | – | 1992 | – |
| Wilhelm | German | 430 | 🇦🇹 Austria | #390 | 1987 | ▲ 196 % |
| Wilhelm | German | 272 | 🇩🇪 Germany (large cities) | #340 | 2018 | – |
| Wilhelm | German | 173 | 🇵🇱 Poland | #419 | 2021 | ▶ 0 % |
| Vilhelm | Swedish | 1,998 | 🇸🇪 Sweden | #130 | 2012 | ▼ 13 % |
| Vilhelm | Swedish | 476 | 🇩🇰 Denmark | – | 2022 | – |
| Vilmos | Hungarian | 2,184 | 🇭🇺 Hungary | #62 | 2025 | – |
| Wiliam | French | 1,256 | 🇺🇸 United States | #6446 | 1881 | ▲ 11 % |
| Wiliam | French | 381 | 🇦🇷 Argentina | #1766 | 2014 | ▲ 63 % |
| Wiliam | French | 200 | 🇫🇷 France | – | 1911 | – |
| Wiliam | French | 165 | 🏴 England & Wales | – | 2004 | – |
| Wiliam | French | 66 | 🇨🇦 Québec | – | 2007 | – |
| Villum | Danish | 1,402 | 🇩🇰 Denmark | – | 2015 | – |
| Wilhem | French | 860 | 🇫🇷 France | #3522 | 2006 | ▼ 37 % |
| Wilhem | French | 10 | 🇺🇸 United States | – | 1997 | – |
| Vilém | Czech | 657 | 🇨🇿 Czechia | #31 | 2025 | – |
| Willyam | French | 383 | 🇨🇦 Québec | #697 | 2009 | ▼ 63 % |
| Willyam | French | 260 | 🇫🇷 France | #2688 | 2018 | ▼ 16 % |
| Wylliam | French | 230 | 🇫🇷 France | #5721 | 2020 | ▲ 27 % |
| Wylliam | French | 185 | 🇨🇦 Québec | – | 2006 | – |
| Wylliam | French | 21 | 🇺🇸 United States | – | 2009 | – |
| Villiam | Swedish | 309 | 🇸🇪 Sweden | #498 | 1999 | ▲ 31 % |
| Villiam | Swedish | 70 | 🇫🇷 France | – | 1905 | – |
How we grouped these names
- William ↔ Guillaume — checked by hand
- William ↔ Guillermo — checked by hand
- William ↔ Guilherme — checked by hand
- William ↔ Wilhelm — checked by hand
- William ↔ Guillem — checked by hand
- William ↔ Vilém — checked by hand
- William ↔ Vilmos — checked by hand
- William ↔ Willem — checked by hand
- William ↔ Villum — checked by hand
- William ↔ Vilhelm — checked by hand
- Guillem ↔ Guilhem — spelling variant
- Willem ↔ Wilhem — spelling variant
- William ↔ Wiliam — spelling variant
- William ↔ Willyam — spelling variant
Questions about William
How popular is the name William?
In 2025 it ranked #6 in Québec. Official registers record 5,330,770 births across 28 countries.
What is William in other languages?
Guillermo (Spanish); Guillaume (French); Guillem (Catalan); Guilhem (Catalan); Guilherme (Portuguese); Willem (French); Wilhelm (German); Vilhelm (Swedish); Vilmos (Hungarian); Wiliam (French).
When was William most popular?
It peaked in the United States in 1880, at 4,748.9 births per 100,000.
Is William a boy or a girl name?
In official birth registers, William is a boy name.