Cosmo
Cosmo was the 1934th most popular name for boys in 2025, given to 80 babies. Its best year was 1913, when it ranked 933rd; the most babies were born in 2022 (99). Over the last ten years it has moved up 1,510 places. More babies were named Cosmo in the 2020s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #1,934 boys, up 337 places since 2020
- Babies in 2025
- 80boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 202299 babies
- Total since 1880
- 2,955babies recorded
Cosmo popularity since 1880
A few girls are given the name too: 6 since 2022.
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #1,934 | 80 |
| 2020 | #2,271 | 60 |
| 2010 | #4,013 | 25 |
| 2000 | #3,658 | 22 |
| 1990 | #4,453 | 12 |
| 1980 | #5,661 | 6 |
| 1970 | #2,009 | 20 |
| 1960 | #1,981 | 17 |
| 1950 | #1,896 | 16 |
| 1940 | #2,210 | 11 |
| 1930 | #1,119 | 39 |
| 1920 | #1,123 | 40 |
| 1910 | #1,461 | 6 |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Cosmo, counting every spelling?
Cosmo is the most common spelling of a name family that had 92 boys in 2025 across its spellings. Together these spellings went to 92 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Cosmo | 80 | #1,934 | 450 |
| Kosmo | 12 | #7,024 | 29 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Cosmo?
80 of the 3,606,400 babies born in the US in 2025 were named Cosmo (0.02 per 1,000 births). For a boy named Cosmo born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 105 (of 430 pupils) would have a child named Cosmo.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Cosmo?
About 1,800 people born in the US named Cosmo are alive today, with a median age of 21; half are between 5 and 47. That makes Cosmo mostly worn by children and young adults. The wide spread shows a name popular in two different eras.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Cosmo by state
How common Cosmo was among boys born in each state in 2021–2025. It is notably more common than nationally in New York (1.8×), California (1.6×). In 41 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Cosmo: their share of US boys followed the most similar curve since 1880. If you like Cosmo, they share its era and feel.
Questions about the name Cosmo
How popular is the name Cosmo?
Cosmo was the 1934th most popular name for boys in 2025, given to 80 babies. Its best year was 1913, when it ranked 933rd; the most babies were born in 2022 (99). Over the last ten years it has moved up 1,510 places. More babies were named Cosmo in the 2020s than in any other decade.
Is Cosmo a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Cosmo in the US.
Where is Cosmo most popular?
In 2021–2025, Cosmo was most common in New York (0.09 per 1,000 boys), followed by California and Oregon.