Is Kaius a boy or girl name?

Kaius is a boy’s name. Of the 2,011 Americans recorded with the name since 1880, 0.0% were girls and 100.0% were boys.

Kaius

Recorded 2005–2025 · United States

Kaius was most popular in 2025, when 216 American babies were given the name — ranking #2,103 that year. In 2025 it ranked #2,103, with 216 births. Across 1880–2025 the Social Security Administration has recorded 2,011 people named Kaius.

Kaius over time

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

Is Kaius a boy’s or a girl’s name?

Across the whole record Kaius is a boy’s name — 0.0% of the 2,011 Americans given it were girls and 100.0% were boys. 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 Kaius

Where Kaius is most concentrated

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

Explore further

See Kaius on the interactive charts

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