Is Katilyn a boy or girl name?

Katilyn is a girl’s name. Of the 1,738 Americans recorded with the name since 1880, 100.0% were girls and 0.0% were boys.

Name Legacy

Katilyn

Recorded 1980–2019 · United States

Katilyn was most popular in 1998, when 101 American babies were given the name — ranking #2,790 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 1,738 people named Katilyn.

Katilyn over time

Births per year. The dot marks Katilyn’s peak in 1998. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Katilyn a boy’s or a girl’s name?

Across the whole record Katilyn is a girl’s name — 100.0% of the 1,738 Americans given it were girls and 0.0% were boys. In births since 2016 it is 100% girls and 0% 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 Katilyn

Where Katilyn is most concentrated

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

Explore further

See Katilyn on the interactive charts

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