Katlyn
Meaning
a modern phonetic respelling of Caitlin, the Irish form of Katherine, from Greek Aikaterine, whose meaning is disputed
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Katlyn peaked in the 1990s and the 2000s in nearly equal measure.
See popularity in Brazil
Popularity in Brazil
1,436 people · the #6,460 first name in Brazil · about 1 in 142,857 · median age 19
Among people named Katlyn living in Brazil at the 2022 census, more were born in the 2000s than in any other decade.
The census also counted 47 born between 2020 and August 2022, too recent a span to chart.
Source: IBGE, Censo Demográfico 2022
When you meet Katlyn
Most people given the name Katlyn in the United States were born between 1990 and 2009. The Katlyn you meet today is most often in her 20s or 30s.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Katlyn deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Katlyn truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Katlyn fits with your family’s names and surname.
Does Katlyn fit YOUR family?
nametree reads your family’s names and finds the ones that belong. Free, private, no ads.
Add Katlyn to your family’s tree →