Cailin Girl
How popular is Cailin?
#11,928 girl name in 2025
7 baby girls were named Cailin in the US in 2025, making it the 11928th most popular girl name.
Cailin popularity over time
Boys Girls
| Rank in 2025 | #11,928 for girls (▼ 4338 from 2024) |
|---|---|
| Babies in 2025 | 7 girls |
| 10-year trend | Falling fast (-86% babies vs 2015) |
| Earlier ranks | #3,254 in 2015, #3,546 in 2020 |
| Peak year | 2003 (164 girls) |
| Highest rank | #1,159 in 1998 |
| First recorded | 1968 |
| Boys vs girls (last 10 years) | 0% boys, 100% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Cailin 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 Cailin is most popular
Babies named Cailin per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
- California: 0.0 per 1,000 (7 girls)
Cailin by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1960s | 9 | #4,778 |
| 1970s | 53 | #5,214 |
| 1980s | 423 | #1,811 |
| 1990s | 1,079 | #1,159 |
| 2000s | 1,425 | #1,271 |
| 2010s | 604 | #1,621 |
| 2020s | 120 | #3,546 |
Girl names about as popular as Cailin
Questions
- Is Cailin a boy or girl name?
- Cailin is mostly a girl name. Over the last 10 years, 100% of babies named Cailin were girls.
- How popular is the name Cailin?
- 7 baby girls were named Cailin in the US in 2025, making it the 11928th most popular girl name.
- When was Cailin most popular?
- Cailin peaked in 2003, when 164 girls were given the name. Its highest rank was #1,159 in 1998.
- How many people are named Cailin?
- 3,743 babies have been named Cailin in the US since 1880. We estimate about 3,693 of them are alive in 2026, with a median age of 24.
- Where is Cailin most popular?
- From 2021 to 2025, Cailin was most common in California, at 0.0 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.