Cosby
Boy nameCosby has been given to 235 babies in the U.S. since 1908. It peaked in 1921.
Popularity over time births per year, 1880–2025
Total babies
235
Peak year
1921 (15 babies)
Rank in 2025
Below top 1000
First recorded
1908
10-year trend
New / returning
Gender split
10% girls / 90% boys
Spellings & variants
Names one letter away from Cosby — alternate spellings parents actually use.
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Cosby.
Sibling name ideas for Cosby
Same era and popularity as Cosby, avoiding matching initials or rhymes.
FAQ
How popular is the name Cosby?
Cosby has been given to 235 babies in the U.S. since 1908. It ranked below the top 1000 in 2025.
When did the name Cosby peak?
Cosby peaked in 1921, when 15 babies were given the name.
Is Cosby a girl or boy name?
Cosby is primarily a boy name (90% of babies named Cosby are boys).
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