Is Kaydyn a boy or girl name?

Kaydyn is a unisex name. Of the 574 Americans recorded with the name since 1880, 39.7% were girls and 60.3% were boys. It changed hands in 2012, and has gone mainly to boys since.

Name Legacy

Kaydyn

Recorded 2000–2025 · United States

Kaydyn was most popular in 2009, when 53 American babies were given the name — ranking #5,474 that year. In 2025 it ranked #17,163, with 9 births. Across 1880–2025 the Social Security Administration has recorded 574 people named Kaydyn.

Kaydyn over time

Births per year. The dot marks Kaydyn’s peak in 2009. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Kaydyn a boy’s or a girl’s name?

Across the whole record Kaydyn is a unisex name — 39.7% of the 574 Americans given it were girls and 60.3% were boys. It changed hands: since 2012 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 21% girls and 79% 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 Kaydyn

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See Kaydyn on the interactive charts

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