girl's name
Cailyn
- Gender Girl
- Letters 6
- Popularity Uncommon
- Births on record 6,083
Northern Ireland
#493
2011 births
Cailyn is a girl's name. In 2025 it was given to 45 babies in the United States. It is used consistently but remains uncommon.
- Peaked in 2009, when 401 babies were given the name.
- It has been falling over the past decade.
- Today about 1 in 73,676 babies in the United States is given this name.
- First appears in US birth records in 1979.
Cailyn over time
Births per decade in the United States, 1970s 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 |
|---|---|
| 1970s | 5 |
| 1980s | 120 |
| 1990s | 857 |
| 2000s | 2,445 |
| 2010s | 1,791 |
| 2020s (to 2025) | 336 |
How popular is Cailyn?
In 2025, Cailyn was given to 45 babies in the United States. It is used consistently but remains uncommon.
Where Cailyn 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.
Names that peaked alongside Cailyn
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Cailyn also like
Names whose popularity has risen and fallen in step with Cailyn over the last century — the same taste, a different name.
Sibling names for Cailyn
Names from the same era that won't rhyme or share an initial with Cailyn — the two things that make a sibling set grate.
Common questions about Cailyn
How popular is the name Cailyn?
In 2025, Cailyn was given to 45 babies in the United States. It is used consistently but remains uncommon.
Is Cailyn a girl's or a boy's name?
Cailyn is given almost entirely to girls in birth records.
When was Cailyn most popular?
Cailyn peaked in 2009, when 401 babies were given the name. It has been falling over the past decade.
Is Cailyn a good name?
That is not something records can settle, but they can tell you what you would be choosing. Cailyn currently ranks #3,729 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.