Jamarius
Masculine
The -ius at the end of Jamarius is a Latin grammatical case ending. It marks the nominative singular of a second-declension masculine noun, and it has been borrowed into American naming as a decoration, attached to syllables that were never Latin and never declined for anything.
How old is the name Jamarius?
Jamarius first appears in US birth records in 1984 — 41 years ago. The typical Jamarius alive today was born around 2005, making them about 20 years old. About 1,800 people named Jamarius are estimated to be alive in the US today.
When was the name Jamarius most popular?
Jamarius peaked in 2003, reaching #1438 nationally. Today it ranks #6446, 5,008 places below that high. See the whole 2003 chart.
Where it comes from
Origin, sound and short forms
Our story of Jamarius
Latin marks the role a noun plays in a sentence by its ending, and -ius is one of those markers: it says this word is the subject, it is singular, and it is masculine. English abandoned the whole system a thousand years ago, so when American naming borrowed -ius it borrowed a piece of grammar with nothing left to do, and used it as a signal of weight and formality instead. That is a completely ordinary thing for a language to do with a borrowed ending, and the result is a large family of American names, Demetrius, Tavarius, Antonius, Jamarius, whose endings are more Roman than anything in Rome would recognize. Jamarius appears in United States records from the 1980s and reached its best year in 2003.
Meaningnot established
Not established
No inherited etymology. The name is built from the Ja- prefix and an ending modeled on the Latin -ius of Marius, Julius and Cornelius. Marius itself is a Roman clan name of uncertain sense, possibly connected to Mars. Whether Jamarius contains Marius or merely rhymes with it cannot be settled, and the prefix carries no meaning in either case.
Pronouncing Jamarius
juh-MAIR-ee-us
Four syllables with the stress on the second. The -ius is two syllables in English, ee-us, exactly as in Julius; a three-syllable reading is also heard.
Nicknames for Jamarius
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1984
- Most boys named
- 200697 — the highest on record
- Peak rank
- #1438reached in 2003
- Change vs 2024
- −40.9%13 in 2025, from 22
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Jamarius in other languages
The same name elsewhere
- Jamarion in English — related form
- Demarius in English — related form
Strongest US states over the last decade: Mississippi, Florida.
Jamariuss among us
people named Jamarius are estimated to be alive in the US today
About 1 boy in 131,390 born in 2025 was named Jamarius
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
What happens to a name after it peaks
The Rochester test
Every popular name lives one long story — a climb, a peak, a slow settling back. Jamarius's later chapters haven't been written yet, so we borrowed them: Rochester climbed just as high around 1944, and its whole arc is on record. Line the two peaks up, and Rochester's path sketches the road Jamarius is walking now.
Jamarius sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Jamarius beside its neighbors
The names ranked closest to Jamarius in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- Long and formal-sounding, which few modern coinages achieve.
- Mario is available inside it as a completely established short form.
- The Latin ending gives it a weight that shorter names in its family lack.
- Four syllables will be shortened immediately in everyday use.
- Jamarion, Jemarius and Jamarius all circulate.
- The name has no meaning to pass on, only a borrowed grammatical ending.
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What they receive
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Jamarius
Masculine · #6446 in the U.S.
Frequently asked
- How many Jamariuss are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 1,800 people named Jamarius are estimated to be alive in the US today.
- How popular is the name Jamarius in 2025?
- Jamarius ranks #6446 among US boy names in 2025, with 13 babies given the name.
- How rare is the name Jamarius?
- About 1 in every 131,390 US boys born in 2025 was named Jamarius — 13 in all.
- Will my child share the name Jamarius with classmates?
- Jamarius will almost certainly be the only one in school.
Ranked beside Jamarius
Names sitting at a similar level of popularity right now.
Rollie#6446 · Billie#6446 · Worth#6446 · Blas#6446 · Starling#6446 · Alvis#6446 · Elwyn#6446 · Rollin#6446
Looking for what else is popular rather than what resembles Jamarius? See the current top 100.
Choosing between Jamarius and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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