Casto
Boy nameCasto has been given to 21 babies in the U.S. since 1915. It peaked in 1940.
Popularity over time births per year, 1880–2025
Total babies
21
Peak year
1940 (6 babies)
Rank in 2025
Below top 1000
First recorded
1915
10-year trend
New / returning
Gender split
All boys
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Casto.
Sibling name ideas for Casto
Same era and popularity as Casto, avoiding matching initials or rhymes.
FAQ
How popular is the name Casto?
Casto has been given to 21 babies in the U.S. since 1915. It ranked below the top 1000 in 2025.
When did the name Casto peak?
Casto peaked in 1940, when 6 babies were given the name.
Is Casto a girl or boy name?
Casto is primarily a boy name (100% of babies named Casto are boys).
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