Marius
Boy name · #2541 in 2025 · Very rare
How old is the name Marius? In official American birth records, Marius has been tracked continuously since 1881, giving it 144 years of documented American history.
Marius ranks #2541 among American boys' names as of 2025, with 52 newborns given the name that year. A decade ago it stood at #2212, so the name has been falling over the past ten years. Roughly one in every 34,615 boys born in 2025 was named Marius.
The 144-year story
Marius first appears in the Social Security records in 1881, when 5 boys received the name. Its peak came in 2004, when 80 boys were named Marius — good for #1618 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Marius per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Marius against up to 5 other names.
Uniqueness: will there be another Marius in class?
On our rarity read — which blends how common Marius is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Marius will likely be the only one in the room, with the occasional spelling-out as the price.
Where Marius is most common
State-level data for Marius is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Marius
Statistically, parents drawn to Marius tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Mateus, Matheus, Angus, Justus, and Jairus.
MateusMatheusAngusJustusJairusZacchaeusGaiusSeamus
Rank history (last 25 years)
| Year | Babies named Marius | Rank |
|---|---|---|
| 2025 | 52 | #2539 |
| 2024 | 57 | #2418 |
| 2023 | 33 | #3474 |
| 2022 | 50 | #2648 |
| 2021 | 58 | #2349 |
| 2020 | 65 | #2139 |
| 2019 | 59 | #2310 |
| 2018 | 67 | #2101 |
| 2017 | 67 | #2065 |
| 2016 | 68 | #2066 |
| 2015 | 61 | #2212 |
| 2014 | 47 | #2582 |
| 2013 | 69 | #1989 |
| 2012 | 58 | #2238 |
| 2011 | 60 | #2173 |
| 2010 | 57 | #2262 |
| 2009 | 64 | #2119 |
| 2008 | 74 | #1932 |
| 2007 | 68 | #2034 |
| 2006 | 57 | #2221 |
| 2005 | 69 | #1854 |
| 2004 | 80 | #1618 |
| 2003 | 79 | #1591 |
| 2002 | 50 | #2125 |
| 2001 | 28 | #3143 |
Frequently asked questions
How old is the name Marius?
In official American birth records, the name Marius first appeared in 1881 (over 144 years ago), when 5 newborn boys received the name. It has over a century of continuous American history.
Is Marius a popular boy name?
Marius ranked #2541 among boys in 2025 with 52 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2212.
When was the name Marius most popular?
Marius peaked in 2004, when 80 American boys received the name (ranked #1618 that year). Since 2004 the name has declined from that high.
How rare is the name Marius?
In 2025, roughly 1 in 34,615 newborn American boys was named Marius. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.