Kailyn Girl
How popular is Kailyn?
#1,818 girl name in 2025
110 baby girls were named Kailyn in the US in 2025, making it the 1818th most popular girl name. Another 8 boys got the name (#8,906 for boys).
Kailyn popularity over time
Boys Girls
| Rank in 2025 | #1,818 for girls (▼ 239 from 2024) |
|---|---|
| Babies in 2025 | 110 girls, 8 boys |
| 10-year trend | Falling fast (-75% babies vs 2015) |
| Earlier ranks | #659 in 2015, #1,196 in 2020 |
| Peak year | 2011 (793 girls) |
| Highest rank | #397 in 2011 |
| First recorded | 1981 |
| Boys vs girls (last 10 years) | 3% boys, 97% girls |
| Chance a classmate shares it | 0.1% in a class of 25 kids born in 2025 |
Kailyn counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Kaylin family of names ranked #373 for girls in 2025 (#335 the year before), with 849 babies in all.
| Spelling | Girls in 2025 | Share |
|---|---|---|
| Kaylin | 126 | 15% |
| Kailyn | 110 | 13% |
| Kaylynn | 134 | 16% |
| Kailynn | 78 | 9% |
| Kaylen | 61 | 7% |
| Kaylyn | 70 | 8% |
| Cailyn | 40 | 5% |
| Kaylene | 37 | 4% |
| Kalynn | 15 | 2% |
| Cailynn | 17 | 2% |
| Kahlan | 10 | 1% |
| Kalyn | 19 | 2% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Kailyn is most popular
Babies named Kailyn per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
- South Carolina: 0.3 per 1,000 (24 girls)
- Georgia: 0.2 per 1,000 (45 girls)
- North Carolina: 0.2 per 1,000 (39 girls)
- Virginia: 0.2 per 1,000 (27 girls)
- Florida: 0.1 per 1,000 (56 girls)
Kailyn by decade
Girl names about as popular as Kailyn
Questions
- Is Kailyn a boy or girl name?
- Kailyn is mostly a girl name. Over the last 10 years, 97% of babies named Kailyn were girls.
- How popular is the name Kailyn?
- 110 baby girls were named Kailyn in the US in 2025, making it the 1818th most popular girl name. Another 8 boys got the name (#8,906 for boys).
- When was Kailyn most popular?
- Kailyn peaked in 2011, when 793 girls were given the name. Its highest rank was #397 in 2011.
- How many people are named Kailyn?
- 14,351 babies have been named Kailyn in the US since 1880. We estimate about 14,219 of them are alive in 2026, with a median age of 18.
- Where is Kailyn most popular?
- From 2021 to 2025, Kailyn was most common in South Carolina, at 0.3 of every 1,000 girls born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.