Marius
Recorded 1881–2025 · United States
Marius was most popular in 2004, when 80 American babies were given the name — ranking #3,738 that year. In 2025 it ranked #5,471, with 52 births. Across 1880–2025 the Social Security Administration has recorded 2,654 people named Marius.
Marius over time
How old is the name Marius?
Marius first appears in Social Security Administration records in 1881, which makes it about 144 years old as a recorded American name. It has been recorded in 105 of the 145 years since.
How many people are named Marius?
The Social Security Administration has recorded 2,654 American births named Marius 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 2,312 are estimated to be alive today.
How many babies were named Marius in 2025?
52 American babies were named Marius in 2025, ranking #5,471 that year.
Is Marius getting more or less popular?
Marius is holding steady. Across 2021–2025 it averaged 50 births a year, against 59 a year across 2011–2015 — a change of -15% 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.
Is Marius a boy’s or a girl’s name?
Across the whole record Marius is a boy’s name — 0.0% of the 2,654 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.
How old is someone named Marius?
Roughly 2,312 Americans named Marius are alive today — 87% of everyone ever recorded with the name. The median is 20 years old, and half are between 11 and 35.
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.
Where Marius is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Marius on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org