Kailen
- US rank
- Unranked
- Syllables
- 2
- Peak
- #3,443 in 1999
0 babies were named Kailen in the US in 2025.
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US births per million girls, 1984–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Kailen you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryKailen first shows up in US birth records in 1983, the first year at least 5 babies got it. It has been in use for 42 years since.
- Best yearIts best year was 1999, when it reached #3,443.
About the name Kailen
Kailen is a girl name of American origin. It has 6 letters and 2 syllables, starting with K and ending in “-len”. US birth records list Kailen for girls from 1984 to 2024, in 39 of those 41 years. Its best year was 1999, when it ranked #3,443 among girl names. It hasn't been given to 5 or more US babies in a year since 2024, so today it's a genuinely rare choice.
Origin:American names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1980s | 3.4 | 292,683 girls |
| 1990s | 11 | 87,489 girls |
| 2000s | 15 | 64,558 girls |
| 2010s | 9.8 | 102,564 girls |
| 2020s | 3.7 | 268,817 girls |
Other spellings of Kailen
More American girl names
- Girl name: Lainey · possibly light
- Girl name: Daisy · day's eye
- Girl name: Josie · he will add
- Unisex name: Kinsley · king's meadow
- Girl name: Sienna · from Siena
- Unisex name: Brooklyn · from Brooklyn, New York
- Girl name: Summer · summer
- Unisex name: Stevie · crown
Questions about the name Kailen
What is the origin of the name Kailen?
Kailen has American roots in our records. Other American names include Lainey, Daisy, Josie.
Is Kailen a boy or girl name?
Kailen is a girl name, though a few boys get it too.
How popular is the name Kailen?
Kailen is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 2024. It peaked at #3,443 in 1999.