Cailyn

Girl name

Cailyn has been given to 5,554 babies in the U.S. since 1979. It peaked in 2009. In 2025, about 1 in 40,182 girls was named Cailyn.

Popularity over time births per year, 1880–2025

Hover or tap the chart to read any year.

Total babies

5,554

Peak year

2009 (401 babies)

Rank in 2025

Below top 1000

First recorded

1979

10-year trend

▼ -75%

Gender split

100% girls / 0% boys

Spellings & variants

Names one letter away from Cailyn — alternate spellings parents actually use.

Caitlyngirl

52,637 babies since 1968

Kailyngirl

14,351 babies since 1981

Jailyngirl

5,886 babies since 1982

Names with a similar vibe

Same primary gender, peaked around the same years, and roughly as common as Cailyn.

Anisagirl

5,558 babies since 1958

Jamyagirl

5,576 babies since 1991

Hayleighgirl

5,527 babies since 1986

Adellegirl

5,492 babies since 1880

Alaysiagirl

5,478 babies since 1990

Laniegirl

5,637 babies since 1880

Desiregirl

5,468 babies since 1915

Taylagirl

5,467 babies since 1976

FAQ

How popular is the name Cailyn?

Cailyn has been given to 5,554 babies in the U.S. since 1979. It ranked below the top 1000 in 2025.

When did the name Cailyn peak?

Cailyn peaked in 2009, when 401 babies were given the name.

Is Cailyn a girl or boy name?

Cailyn is primarily a girl name (100% of babies named Cailyn are girls).

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