Kailyn
Girl name · American · English · Irish
- US rank
- #1,818
- Syllables
- 2
- Peak
- #397 in 2011
110 babies were named Kailyn in the US in 2025. It has dropped 622 places in five years.
Save adds it to your list. Vote moves it up the top voted names.
US births per million girls, 1981–2025
Most popular states (2025)
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Kailyn you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- How commonAbout 1 in every 14,620 baby girls born in the US in 2025 was named Kailyn, 110 babies in all. In a typical school of 500 kids, your Kailyn would very likely be the only one.
- HistoryKailyn first shows up in US birth records in 1981, the first year at least 5 babies got it. It has been in use for 44 years since.
- Best yearIt was far more popular in 2011, when it ranked #397. Today it's #1,818, so it could be due a comeback.
- Then vs nowKailyn was 3.5× more common in 2000 than it is today. In 2000 it was given to about 1 in 4,214 baby girls; in 2025, about 1 in 14,620.
- TrendKailyn has slipped 622 places over the last five years and now sits at #1,818. Good news if you want a familiar name that fewer kids will share.
- Where it's lovedKailyn is most popular in South Carolina, where it ranks #773. It's in the top 1,000 in 1 state.
About the name Kailyn
Kailyn is a girl name of American, English and Irish origin. It has 6 letters and 2 syllables, starting with K and ending in “-lyn”. US birth records list Kailyn for girls from 1981 to 2025, in 45 of those 45 years. Its best year was 2011, when it ranked #397 among girl names. In 2025 it ranked #1,818, with 110 babies.
Origin:American namesEnglish namesIrish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1980s | 22 | 45,455 girls |
| 1990s | 136 | 7,358 girls |
| 2000s | 301 | 3,319 girls |
| 2010s | 280 | 3,569 girls |
| 2020s | 95 | 10,480 girls |
Other spellings of Kailyn
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 Kailyn
What is the origin of the name Kailyn?
Kailyn has American, English, Irish roots in our records. Other American names include Lainey, Daisy, Josie.
Is Kailyn a boy or girl name?
Kailyn is a girl name, though a few boys get it too.
How popular is the name Kailyn?
Kailyn ranked #1,818 for US girls in 2025, given to 110 babies. Its best year was 2011 (#397).