1,829births recorded
4Countries
1Variants
1964Peak · Ireland
#3379United States 2025
Kiernan is a boy name family recorded 1,829 times in 4 countries since 1957. It ranks highest today in the United States (#3379 in 2025). Its all-time peak was in Ireland in 1964, at 16.3 births per 100,000.
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
All forms of Kiernan
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Kiernan | English | 1,761 | 🇺🇸 United States | #3379 | 2010 | ▼ 5 % |
| Kiernan | English | 36 | 🏴 England & Wales | – | 2004 | – |
| Kiernan | English | 17 | 🇮🇪 Ireland | – | 1964 | – |
| Kiernan | English | 15 | 🇨🇦 Ontario | – | 2000 | – |
Questions about Kiernan
How popular is the name Kiernan?
In 2025 it ranked #3379 in the United States. Official registers record 1,829 births across 4 countries.
When was Kiernan most popular?
It peaked in Ireland in 1964, at 16.3 births per 100,000.
Is Kiernan a boy or a girl name?
In official birth registers, Kiernan is a boy name.