39,453births recorded
11Countries
1Variants
1999Peak · South Australia
#34New South Wales 2025
Lachlan is a boy name family recorded 39,453 times in 11 countries since 1952. It ranks highest today in New South Wales (#34 in 2025). Its all-time peak was in South Australia in 1999, at 1,539.3 births per 100,000.
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
Rank in countries that publish top lists only
All forms of Lachlan
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Lachlan | English | 18,344 | 🇦🇺 New South Wales | #34 | 2005 | – |
| Lachlan | English | 6,398 | 🇺🇸 United States | #606 | 2025 | ▲ 62 % |
| Lachlan | English | 4,341 | 🇦🇺 South Australia | #59 | 1999 | ▼ 100 % |
| Lachlan | English | 4,297 | 🇦🇺 Victoria (AU) | #44 | 2008 | – |
| Lachlan | English | 2,417 | 🏴 England & Wales | #283 | 2025 | ▲ 60 % |
| Lachlan | English | 1,460 | 🏴 Scotland | #79 | 2021 | ▲ 13 % |
Questions about Lachlan
How popular is the name Lachlan?
In 2025 it ranked #34 in New South Wales. Official registers record 39,453 births across 11 countries.
When was Lachlan most popular?
It peaked in South Australia in 1999, at 1,539.3 births per 100,000.
Is Lachlan a boy or a girl name?
In official birth registers, Lachlan is a boy name.