Kathlyn
Meaningpure · Irish form of Kathleen
- US rank
- #4,758
- Syllables
- 2
- Peak
- #557 in 1914
28 babies were named Kathlyn in the US in 2025. It has climbed 5,492 places in five years.
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US births per million girls, 1897–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Kathlyn you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- How commonAbout 1 in every 57,471 baby girls born in the US in 2025 was named Kathlyn, 28 babies in all. In a typical school of 500 kids, your Kathlyn would very likely be the only one.
- HistoryKathlyn first shows up in US birth records in 1897, the first year at least 5 babies got it. It has been in use for 128 years since.
- Best yearIt was far more popular in 1914, when it ranked #557. Today it's #4,758, so it could be due a comeback.
- TrendKathlyn has climbed 5,492 places in the US rankings over the last five years and now sits at #4,758. Fast risers like this often keep climbing, so expect to hear it more.
- MeaningKathlyn is an Irish form of Kathleen, which means “pure”.
About the name Kathlyn
Kathlyn is a girl name of Irish origin meaning “pure”. It has 7 letters and 2 syllables, starting with K and ending in “-lyn”. US birth records list Kathlyn for girls from 1897 to 2025, in 127 of those 129 years. Its best year was 1914, when it ranked #557 among girl names. In 2025 it ranked #4,758, with 28 babies.
Origin:Irish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1890s | 27 | 36,496 girls |
| 1900s | 26 | 38,066 girls |
| 1910s | 62 | 16,171 girls |
| 1920s | 43 | 23,447 girls |
| 1930s | 25 | 39,872 girls |
| 1940s | 48 | 20,631 girls |
| 1950s | 45 | 22,267 girls |
| 1960s | 21 | 48,100 girls |
| 1970s | 14 | 69,252 girls |
| 1980s | 22 | 45,147 girls |
| 1990s | 27 | 36,928 girls |
| 2000s | 21 | 48,123 girls |
| 2010s | 8.7 | 115,473 girls |
| 2020s | 13 | 77,620 girls |
Other spellings of Kathlyn
More Irish girl names
- Girl name: Abigail · my father is joy
- Unisex name: Riley · rye clearing
- Girl name: Maeve · she who intoxicates
- Unisex name: Kennedy · helmeted head
- Unisex name: Rylee · rye clearing
- Unisex name: Sloane · raider
- Unisex name: Alani · orange tree
- Girl name: Everleigh · boar clearing
Questions about the name Kathlyn
What does the name Kathlyn mean?
Kathlyn means “pure” in Irish, as a form of Kathleen.
What is the origin of the name Kathlyn?
Kathlyn has Irish roots in our records. Other Irish names include Abigail, Riley, Maeve.
Is Kathlyn a boy or girl name?
Kathlyn is a girl name.
How popular is the name Kathlyn?
Kathlyn ranked #4,758 for US girls in 2025, given to 28 babies. Its best year was 1914 (#557).