Is Dillyn a boy or girl name?

Dillyn is a unisex name. Of the 634 Americans recorded with the name since 1880, 35.0% were girls and 65.0% were boys. It changed hands in 2015, and has gone mainly to boys since.

Name Legacy

Dillyn

Recorded 1991–2023 · United States

Dillyn was most popular in 2003, when 32 American babies were given the name — ranking #6,900 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 634 people named Dillyn.

Dillyn over time

Births per year. The dot marks Dillyn’s peak in 2003. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Dillyn a boy’s or a girl’s name?

Across the whole record Dillyn is a unisex name — 35.0% of the 634 Americans given it were girls and 65.0% were boys. It changed hands: since 2015 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 73% girls and 27% 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 Dillyn

Explore further

See Dillyn on the interactive charts

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