Is Lux a boy or girl name?

Lux is a unisex name. Of the 3,181 Americans recorded with the name since 1880, 52.0% were girls and 48.0% were boys. It changed hands in 2019, and has gone mainly to boys since.

Name Legacy

Lux

Recorded 2001–2025 · United States

Lux was most popular in 2022, when 334 American babies were given the name — ranking #1,579 that year. In 2025 it ranked #1,990, with 235 births. Across 1880–2025 the Social Security Administration has recorded 3,181 people named Lux.

Lux over time

Births per year. The dot marks Lux’s peak in 2022. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Lux a boy’s or a girl’s name?

Across the whole record Lux is a unisex name — 52.0% of the 3,181 Americans given it were girls and 48.0% were boys. It changed hands: since 2019 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 41% girls and 59% 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 Lux

Where Lux is most concentrated

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

Explore further

See Lux on the interactive charts

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