5,259births recorded
8Countries
2Variants
1984Peak · Austria
#720Austria 2025
Klaus is a boy name family recorded 5,259 times in 8 countries since 1880. It ranks highest today in Austria (#720 in 2025). Its all-time peak was in Austria in 1984, at 310.0 births per 100,000. Elsewhere it is mostly given as Claus (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.
All forms of Klaus
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Klaus | German | 2,396 | 🇦🇹 Austria | #720 | 1984 | ▼ 5 % |
| Klaus | German | 1,471 | 🇺🇸 United States | #2230 | 2022 | ▲ 81 % |
| Klaus | German | 240 | 🇫🇷 France | #3575 | 1944 | ▲ 27 % |
| Klaus | German | 154 | 🇦🇷 Argentina | – | 1937 | – |
| Klaus | German | 63 | 🇨🇦 Ontario | – | 1957 | – |
| Klaus | German | 22 | 🏴 England & Wales | – | 2020 | – |
| Claus | German | 366 | 🇺🇸 United States | – | 1880 | – |
| Claus | German | 280 | 🇦🇹 Austria | – | 1987 | – |
| Claus | German | 189 | 🇦🇷 Argentina | – | 1988 | – |
| Claus | German | 45 | 🇫🇷 France | – | 1944 | – |
| Claus | German | 23 | 🇨🇦 Ontario | – | 1957 | – |
How we grouped these names
- Klaus ↔ Claus — spelling variant
Questions about Klaus
How popular is the name Klaus?
In 2025 it ranked #720 in Austria. Official registers record 5,259 births across 8 countries.
What is Klaus in other languages?
Claus (German).
When was Klaus most popular?
It peaked in Austria in 1984, at 310.0 births per 100,000.
Is Klaus a boy or a girl name?
In official birth registers, Klaus is a boy name.