Masculine dossier · first seen 1910
Cosmo
Rising
Gaining cultural share
Peak era
2022
Peak births
99
Current vitality
Rare
Peak generation
Gen Alpha
Quick answers about Cosmo
How many people are named Cosmo?
An estimated 1,717 living Americans are named Cosmo.
How rare is Cosmo?
Cosmo is uncommon among babies today, with 80 boys receiving the name in 2025, down 19.2% from its 2022 peak.
How old is the typical Cosmo?
The median age of a living American named Cosmo is approximately 20 years, with most bearers falling between 5 and 44 years old.
Is Cosmo still popular?
Yes — Cosmo is currently rising in popularity, with 80 births in 2025. Births this decade are running about 3× higher than the previous decade.
Where is Cosmo most common?
Cosmo has its strongest geographic signal in New York, where it appears 5.6× more often than the national baseline.
1910Peak 20222025
Peak year
2022
Decline from peak
19.2%
2025
80
All-time
2,949