Is Kao a boy or girl name?

Kao is a unisex name. Of the 719 Americans recorded with the name since 1880, 33.9% were girls and 66.1% were boys. It changed hands in 1992, and has gone mainly to boys since.

Name Legacy

Kao

Recorded 1980–2025 · United States

Kao was most popular in 1981, when 54 American babies were given the name — ranking #3,061 that year. In 2025 it ranked #18,449, with 8 births. Across 1880–2025 the Social Security Administration has recorded 719 people named Kao.

Kao over time

Births per year. The dot marks Kao’s peak in 1981. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Kao a boy’s or a girl’s name?

Across the whole record Kao is a unisex name — 33.9% of the 719 Americans given it were girls and 66.1% were boys. It changed hands: since 1992 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 0% girls and 100% 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 Kao

Where Kao is most concentrated

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

California 7.6×

Explore further

See Kao on the interactive charts

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