Is Katja a boy or girl name?

Katja is a girl’s name. Of the 949 Americans recorded with the name since 1880, 100.0% were girls and 0.0% were boys.

Katja

Recorded 1963–2025 · United States

Katja was most popular in 1998, when 48 American babies were given the name — ranking #4,614 that year. In 2025 it ranked #24,763, with 5 births. Across 1880–2025 the Social Security Administration has recorded 949 people named Katja.

Katja over time

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

Is Katja a boy’s or a girl’s name?

Across the whole record Katja is a girl’s name — 100.0% of the 949 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 Katja

Explore further

See Katja on the interactive charts

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