Is Ciaran a boy or girl name?

Ciaran is a boy’s name. Of the 2,233 Americans recorded with the name since 1880, 1.6% were girls and 98.4% were boys.

Ciaran

Recorded 1959–2025 · United States

Ciaran was most popular in 2025, when 110 American babies were given the name — ranking #3,314 that year. In 2025 it ranked #3,314, with 110 births. Across 1880–2025 the Social Security Administration has recorded 2,233 people named Ciaran.

Ciaran over time

Births per year. The dot marks Ciaran’s peak in 2025. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Ciaran a boy’s or a girl’s name?

Across the whole record Ciaran is a boy’s name — 1.6% of the 2,233 Americans given it were girls and 98.4% were boys. In births since 2016 it is 1% girls and 99% boys.

Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.

Names that peaked alongside Ciaran

Where Ciaran is most concentrated

How much more common the name is in each state than across the country as a whole.

Explore further

See Ciaran on the interactive charts

Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org