girl's name
Cailin
- Gender Girl
- Letters 6
- Popularity Rare
- Births on record 4,351
Northern Ireland
#531
2018 births
Cailin is a girl's name. In 2025 it was given to 7 babies in the United States. It is a rare choice.
- Peaked in 1998, when 169 babies were given the name.
- It has been falling over the past decade.
- Today about 1 in 473,709 babies in the United States is given this name.
- First appears in US birth records in 1968.
Cailin over time
Births per decade in the United States, 1960s to 2020s. The striped bar is the 2020s, still in progress — it covers 2020 to 2025, not a full ten years.
Show the numbers
| Decade | Births |
|---|---|
| 1960s | 9 |
| 1970s | 53 |
| 1980s | 423 |
| 1990s | 1,092 |
| 2000s | 1,442 |
| 2010s | 604 |
| 2020s (to 2025) | 120 |
How popular is Cailin?
In 2025, Cailin was given to 7 babies in the United States. It is a rare choice.
Where Cailin is used
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
How Cailin is spelled
Birth registers count each spelling separately, so every one has its own ranking.
| Spelling | What it is | Births on record |
|---|---|---|
| Cailín | Cailín is a rare spelling of Cailin, written with a fada and recorded 5 times, mostly in Ireland. | 5 |
Names that peaked alongside Cailin
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Cailin also like
Names whose popularity has risen and fallen in step with Cailin over the last century — the same taste, a different name.
Sibling names for Cailin
Names from the same era that won't rhyme or share an initial with Cailin — the two things that make a sibling set grate.
Common questions about Cailin
How popular is the name Cailin?
In 2025, Cailin was given to 7 babies in the United States. It is a rare choice.
Is Cailin a girl's or a boy's name?
Cailin is given almost entirely to girls in birth records.
When was Cailin most popular?
Cailin peaked in 1998, when 169 babies were given the name. It has been falling over the past decade.
Is Cailin a good name?
That is not something records can settle, but they can tell you what you would be choosing. Cailin currently ranks #12,915 in the United States. It has been falling over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.