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 first appears in Social Security Administration records in 2001, which makes it about 24 years old as a recorded American name. It has been recorded in 25 of the 25 years since.
The Social Security Administration has recorded 3,181 American births named Lux between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 3,158 are estimated to be alive today.
235 American babies were named Lux in 2025, ranking #1,990 that year.
Lux is rising. Across 2021–2025 it averaged 272 births a year, against 125 a year across 2011–2015 — a change of +117% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
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.
Roughly 3,158 Americans named Lux are alive today — 99% of everyone ever recorded with the name. The median is 6 years old, and half are between 4 and 11. That is a narrow band because Lux is a young name — it only became common recently, so almost everyone carrying it is still a child or a young adult.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
How much more common the name is in each state than across the country as a whole.
See Lux on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org