Katlyn is a girl name family recorded 37,135 times in 10 countries since 1897. It ranks highest today in the United States (#4758 in 2025). Its all-time peak was in the United States in 1995, at 55.5 births per 100,000. Elsewhere it is mostly given as Kathlyn (France, Ireland).
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 Katlyn
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Katlyn | English | 18,438 | 🇺🇸 United States | #8362 | 1995 | ▼ 73 % |
| Katlyn | English | 430 | 🇨🇦 Ontario | – | 1991 | – |
| Katlyn | English | 213 | 🏴 England & Wales | – | 2001 | – |
| Katlyn | English | 100 | 🇫🇷 France | – | 2020 | – |
| Katlyn | English | 83 | 🇮🇪 Ireland | – | 2002 | – |
| Katlyn | English | 78 | 🇨🇦 Alberta | – | 1989 | – |
| Katlin | English | 5,461 | 🇺🇸 United States | – | 1993 | – |
| Katlin | English | 79 | 🇨🇦 Ontario | – | 1988 | – |
| Katlin | English | 56 | 🏴 England & Wales | – | 2002 | – |
| Katlin | English | 11 | 🇨🇦 Alberta | – | 1988 | – |
| Katlin | English | 5 | 🇨🇦 British Columbia | – | 1988 | – |
| Katlin | English | 5 | 🏴 Scotland | – | 1999 | – |
| Kathlyn | English | 5,156 | 🇺🇸 United States | #4758 | 1914 | ▲ 42 % |
| Kathlyn | English | 160 | 🇫🇷 France | – | 2015 | – |
| Kathlyn | English | 137 | 🇮🇪 Ireland | – | 2005 | – |
| Kathlyn | English | 5 | 🏴 England & Wales | – | 2004 | – |
| Katlynn | English | 3,975 | 🇺🇸 United States | – | 1999 | – |
| Katlynn | English | 37 | 🇨🇦 Ontario | – | 1997 | – |
| Katlynn | English | 11 | 🇨🇦 Alberta | – | 1991 | – |
| Catlin | English | 1,055 | 🇺🇸 United States | – | 1991 | – |
| Catlin | English | 5 | 🏴 England & Wales | – | 1999 | – |
| Catlyn | English | 607 | 🇺🇸 United States | – | 2000 | – |
| Kathlynn | English | 554 | 🇺🇸 United States | – | 1995 | – |
| Cathlyn | English | 361 | 🇺🇸 United States | – | 1953 | – |
How we grouped these names
- Katlyn ↔ Katlin — spelling variant
- Katlyn ↔ Kathlyn — spelling variant
- Katlyn ↔ Katlynn — spelling variant
- Katlyn ↔ Catlin — spelling variant
- Katlyn ↔ Catlyn — spelling variant
- Katlyn ↔ Kathlynn — spelling variant
- Katlyn ↔ Cathlyn — spelling variant
Questions about Katlyn
How popular is the name Katlyn?
In 2025 it ranked #4758 in the United States. Official registers record 37,135 births across 10 countries.
What is Katlyn in other languages?
Katlin (English); Kathlyn (English); Katlynn (English); Catlin (English); Catlyn (English); Kathlynn (English); Cathlyn (English).
When was Katlyn most popular?
It peaked in the United States in 1995, at 55.5 births per 100,000.
Is Katlyn a boy or a girl name?
In official birth registers, Katlyn is a girl name.