Cailin
Cailin was the 12153rd most popular name for girls in 2025, given to 7 babies. Its best year was 1998, when it ranked 1161st; the most babies were born in 2003 (164). Over the last ten years it has moved down 8,891 places. More babies were named Cailin in the 2000s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #12,153 girls, down 8,596 places since 2020
- Babies in 2025
- 7girls
- Girls and boys
- Almost always a girl’s name2021–2025
- Peak year
- 2003164 babies
- Total since 1880
- 3,743babies recorded
Cailin popularity since 1880
A few boys are given the name too: 30 since 1996.
| Year | Rank (girls) | Babies (girls) |
|---|---|---|
| 2025 | #12,153 | 7 |
| 2020 | #3,557 | 42 |
| 2010 | #1,623 | 133 |
| 2000 | #1,288 | 150 |
| 1990 | #1,940 | 71 |
| 1980 | #4,010 | 19 |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Cailin, counting every spelling?
Cailin is a spelling of Kaylin, a name family that ranked #295 for girls in 2025 once every spelling is counted together, compared with #12,153 for Cailin on its own. Together these spellings went to 1,103 girls in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Kaylin | 126 | #1,644 | 834 |
| Kaylynn | 134 | #1,576 | 774 |
| Kailyn | 110 | #1,825 | 736 |
| Kaelyn | 131 | #1,601 | 728 |
| Kayleen | 70 | #2,524 | 559 |
| Kaelynn | 79 | #2,310 | 537 |
| Kailynn | 78 | #2,343 | 501 |
| Kaylyn | 70 | #2,525 | 372 |
| Kaylen | 61 | #2,796 | 363 |
| Cailyn | 40 | #3,728 | 261 |
| Kaileen | 33 | #4,299 | 242 |
| Kaylene | 37 | #3,947 | 224 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Cailin?
7 of the 3,606,400 babies born in the US in 2025 were named Cailin (0.00 per 1,000 births). For a girl named Cailin born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 1,224 (of 430 pupils) would have a child named Cailin.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Cailin?
About 3,700 people born in the US named Cailin are alive today, with a median age of 24; half are between 18 and 31. That makes Cailin mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Cailin by state
How common Cailin was among girls born in each state in 2021–2025. In 50 states fewer than five girls a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Cailin: their share of US girls followed the most similar curve since 1880. If you like Cailin, they share its era and feel.
Questions about the name Cailin
How popular is the name Cailin?
Cailin was the 12153rd most popular name for girls in 2025, given to 7 babies. Its best year was 1998, when it ranked 1161st; the most babies were born in 2003 (164). Over the last ten years it has moved down 8,891 places. More babies were named Cailin in the 2000s than in any other decade.
Is Cailin a boy or girl name?
In 2021–2025, almost always a girl’s name given the name Cailin in the US.
Where is Cailin most popular?
In 2021–2025, Cailin was most common in California (0.01 per 1,000 girls).