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Cosmo

#1,934 in 2025Boys' name

Order, ordered universe

Cosmo has been given to 2,955 babies in the U.S. since 1910. In 2025 it ranked #1,934 of 13,926 boys’ names in use. Its peak year was 2022, with 99 recorded.

Babies named Cosmo, 2025

1 in 41,400

Cosmo over time, 1880–2025

BoysGirls
025507510018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Cosmo: meaning, origin, and history

Order, ordered universe

Ancient Greek

What Cosmo means

Cosmo means “order, ordered universe”, associated with kósmos.

Dictionary etymologyReferences, data & attribution

Borrowed by Scotland from Italy in the 18th century. An Italian variant of Cosimo, from the name Cosmas of a saint (martyred with his brother Damian in the fourth century), from Ancient Greek κόσμος (kósmos, “order, ordered universe”).

Excerpt from Wiktionary: Cosmo (English) · CC BY-SA 4.0

Wiktionary material is available under CC BY-SA 4.0.

Origin, language, and formation

Cosmo is used in English and Italian. Its origins include Ancient Greek.

Cosmo comes through Ancient Greek κόσμος.

Related names and everyday forms

Related names include Cosimo.

American usage and historical context

In the United States, 2,949 boys were recorded with the name Cosmo between 1910 and 2025. Its highest annual count was 99 in 2022; its best national rank was #933 in 1913.

Over 5 years its rank rose, from #2,270 in 2020 to #1,934 in 2025. Over 10 years its rank rose, from #3,443 in 2015 to #1,934 in 2025.

In the United States, 6 girls were recorded with the name Cosmo between 2022 and 2022. Its highest annual count was 6 in 2022; its best national rank was #13,979 in 2022.

How common is Cosmo?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 41,400
80 of 3,315,165 births
Among boys only
1 in 21,300
<0.01% of boys
Rank, 2025
#1,934
of 13,926 boys’ names in use
Coin-flip room size
28,725 kids
Even odds of a second one

Where Cosmo sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 5001%

Put another way: gather 28,725 children born in 2025 and it's an even bet that one of them is another Cosmo. In a class of 30 the chance is Under 1%.

When Cosmos were born

Half of everyone ever recorded as Cosmo was born before 1967 — so the typical Cosmo is around 58 today.

Median birth year
1967
About 58 years old
Biggest decade
2020s
17.3% of all use
Born in the last 25 years
34.7%
Spread across generations
Recorded since 1950
1,766
People you could plausibly meet
Choose a decade

2020s — 17.3% of all recorded uses (510).

Is Cosmo rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
−246
Places dropped
Rank vs 5 years ago
+336
Places climbed
Rank vs 10 years ago
+1,509
Places climbed
Births vs 10 years ago
2.50×
More babies than then
Share of its own peak
80.8%
Peak was 2022 (99)
Years since peak
3
Years
Year-to-year steadiness
Volatile
31.1% average annual change
Best rank ever
#933
1913

Spellings of Cosmo

Cosmo is the most-used spelling, taking 33.3% of the 8,857 babies given a near-identical spelling.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Cosmo is used

Across 2016–2025, Cosmo was most concentrated in California — about 1 in 14,286 boys, against 1 in 28,768 across all states with data. It was least common in Texas (1 in 100,000).

17 per 100,000

Most concentrated

  1. 1California1 in 14,286
  2. 2Oregon1 in 14,286
  3. 3New York1 in 20,000
  4. 4Washington1 in 25,000
  5. 5Oklahoma1 in 33,333
  6. 6Florida1 in 50,000
  7. 7Pennsylvania1 in 50,000
  8. 8Ohio1 in 100,000

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings.

Cosmo around the world

Where Cosmo ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    1996–2025
    #639
    in 2025
  • Scotland
    2002–2023
    #728
    in 2023
  • Ireland
    2025–2025
    #829
    in 2025
  • France
    1998–2025
    #1,823
    in 2025
  • Canada
    2010–2024
    #1,459
    in 2024
  • South Australia
    1945–2005
    #643
    in 2005

Popularity data from Office for National Statistics, National Records of Scotland, Central Statistics Office, Institut national de la statistique et des études économiques, Statistics Canada and Consumer and Business Services (South Australia). ONS, NRS data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence.

Notable people named Cosmo

People whose public names include Cosmo, backed by Wikidata given-name records and ordered by linked Wikimedia pages. The name may be a middle name.

People data from Wikidata (CC0). Fame is measured, not judged — the order reflects how widely each person is documented, not the U.S. birth records popularity this page is otherwise about.

Cosmo by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
#1,934
Trend vs 5 yrs ago
Up 336
Best rank ever
#933
1913
Peak year
2022
99 that year
First recorded
1910
Last recorded
2025
All-time count
2,949
Count in 2025
80

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#13,979
2022
Peak year
2022
6 that year
First recorded
2022
Last recorded
2022
All-time count
6
Count in 2025
Under 5

Names similar to Cosmo

Matched on shared beginnings and endings, similar length, and comparable popularity.

CosmeCosimoCostaErasmoCosbyCostonCostasCosmosCosmasKosmoCostelloCossieCosminCostnerOsmoCostantinoCostanzo

Names with a curve like Cosmo

Not spelling — timing. These names rose, peaked and faded in the same years as Cosmo, so they read as being from the same moment even when they look nothing alike.

ConwayHollandFultonLevyFerrisHanselArleySylvanLawtonHamptonArminWylie

Sibling names for Cosmo

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Cosmo

Top names of 2022, Cosmo's peak yearThe 2020s in fullOther names that peaked in 1913Boys' names starting with CCelestial & Space NamesWhimsical Boy Names