Is Kiefer a boy or girl name?

Kiefer is a boy’s name. Of the 1,950 Americans recorded with the name since 1880, 0.0% were girls and 100.0% were boys.

Kiefer

Recorded 1988–2025 · United States

Kiefer was most popular in 1991, when 204 American babies were given the name — ranking #1,620 that year. In 2025 it ranked #22,044, with 6 births. Across 1880–2025 the Social Security Administration has recorded 1,950 people named Kiefer.

Kiefer over time

Births per year. The dot marks Kiefer’s peak in 1991. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Kiefer a boy’s or a girl’s name?

Across the whole record Kiefer is a boy’s name — 0.0% of the 1,950 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 Kiefer

Where Kiefer is most concentrated

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

Explore further

See Kiefer on the interactive charts

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