Cosmo
Masculine · “order”
Cosmo is overwhelmingly a boys’ name — 2,949 boys against 6 girls since 1880.
Cosmo is order in Greek — kosmos, which meant an arrangement and an ornament before it meant the universe, and gives both cosmos and cosmetic.
How old is the name Cosmo?
Cosmo first appears in US birth records in 1910 — 115 years ago. The typical Cosmo alive today was born around 1969, making them about 56 years old. About 1,800 people named Cosmo are estimated to be alive in the US today.
When was the name Cosmo most popular?
Cosmo peaked in 1913, reaching #930 nationally. Today it ranks #1932, 1,002 places below that high. See the whole 1913 chart.
Cosmo appears on this list:
Where it comes from
From kosmos to Cosmo
The story of Cosmo
Saint Cosmas was an early physician martyr, patron of doctors with his brother Damian. Cosimo de' Medici the Elder ruled Florence in all but name from 1434 and financed the Renaissance out of a bank. The name reached Britain through the Medici connection. It appears in American records in current use.
Meaning
order, arrangement, beauty
From the Greek kosmos, 'order' or 'ornament'. Pythagoras is credited with applying it to the universe, on the grounds that the world is orderly. The same word gives cosmetic, from the sense of adornment. The Greek is ordinary and the meaning undisputed.
How the name formed
- kosmos
- Kosmas
- Cosmo
Related forms: Cosimo · Kosmas · Cosme
Pronouncing Cosmo
KOZ-moh
Two syllables, stress on the first. Italian Cosimo is KO-zee-mo with three.
Nicknames for Cosmo
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
- 1910
- Most boys named
- 202394 — the highest on record
- Peak rank
- #930reached in 1913
- Change vs 2023
- −14.9%80 in 2025, from 94
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.
Cosmo in other languages
The same name elsewhere
- Cosimo in Italian — related form
- Kosmas in Greek — related form
- Cosme in Spanish — related form
Strongest US states over the last decade: California, New York, Texas.
Cosmos among us
people named Cosmo are estimated to be alive in the US today
About 1 boy in 21,351 born in 2025 was named Cosmo
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Cosmo
- #1932
- Cosmo on the 2025 chart
- #836
- counting every spelling
The SSA counts spellings, not names. Cosmo went to 80 boys in 2025, but Kosmo is the same name said out loud. Together the 2 spellings went to 92, which makes it the 836th most-given boys’ name of the year — 1,096 places above the chart.
- Cosmo80
- Kosmo12
About 1 boy in 18,566 born in 2025 was given one of these spellings — against 1 in 21,351 for Cosmo itself.
Spellings are grouped by a fixed rule that folds interchangeable English spellings of one sound (ck/k, ph/f, x/ks, a non-initial y for i) and keeps vowels apart, so Sean and Shawn stay separate names. It errs towards splitting: a family here is never larger than the truth. SSA national data, 2025. Method
Is it right for you
What happens to a name after it peaks
Fashion outlook
Cosmo 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
Where Cosmo is headed
Cosmo looks set to keep climbing gently, with roughly 25% more babies a year by 2030 if the current curve holds.
Medium confidence — fitted on official counts through 2025.
A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.
Cosmo beside its neighbors
The names ranked closest to Cosmo in 2025, in babies rather than position — the bars are to scale.
US boys given each name in 2025.
The trade-off
- That order, the universe and cosmetics share a word is a first-rate etymology.
- The Medici who financed the Renaissance carries the Italian form.
- Two clean syllables with no pronunciation risk.
- A magazine and a cocktail both carry the name.
- Cosimo is the Italian form and is far more used there.
- It reads as distinctly unusual in America.
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What they receive
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Cosmo
Masculine · #1932 in the U.S.
Frequently asked
- How many Cosmos 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 Cosmo are estimated to be alive in the US today.
- How do you spell Cosmo?
- Cosmo is the most-used spelling in US records — 80 of the 92 babies given the name in 2025. The others recorded are Kosmo.
- How popular is the name Cosmo in 2025?
- Cosmo ranks #1932 among US boy names in 2025, with 80 babies given the name.
- How rare is the name Cosmo?
- About 1 in every 21,351 US boys born in 2025 was named Cosmo — 80 in all.
- Will my child share the name Cosmo with classmates?
- Cosmo will almost certainly be the only one in school.
Ranked beside Cosmo
Names sitting at a similar level of popularity right now.
Fred#1932 · Colston#1932 · Jacques#1932 · Aj#1932 · Kolbe#1932 · Cristofer#1932 · Irvin#1932 · Zaidyn#1932
Looking for what else is popular rather than what resembles Cosmo? See the current top 100.
Choosing between Cosmo and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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