Casey
Casey is a boy name of Irish origin meaning “Vigilant, watchful”, pronounced KAY-see. It ranked #320 in the United States in 2025, given to 1,072 babies, and peaked at #80 in 1987. Common nicknames: Case.
How popular is Casey in the United States?
Data: U.S. Social Security Administration (SSA). Based on all Social Security card applications for births in the United States.
What does Casey mean, and where does it come from?
Casey is an anglicization of the Irish surname Ó Cathasaigh, derived from "cathasach," meaning "vigilant" or "watchful." It became a household name through the folk legend of Casey Jones, the American railroad engineer celebrated in song for his heroic final ride. Traditionally more common for boys, Casey has also been embraced as a unisex name since the mid-20th century.
How is Casey used around the world?
Casey is used in 0 languages worldwide, with 4+ international variants.
TypeUnisex name
Linguistic data: Wikidata (CC0). Variants and language usage may vary by region.
What are the nicknames for Casey?
Famous People Named Casey
- Casey Jones — American railroad engineer and folk hero
- Casey Affleck — American actor
- Casey Neistat — American filmmaker and YouTuber
Similar Names to Casey
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Sibling Name Ideas for Casey
Looking for names that pair well with Casey? Here are some sibling name suggestions that share a similar style and feel.
Frequently Asked Questions
What does the name Casey mean?
Casey is a boy name of Irish origin meaning "Vigilant, watchful." Casey is an anglicization of the Irish surname Ó Cathasaigh, derived from "cathasach," meaning "vigilant" or "watchful." It became a household name through the folk legend of Casey Jones, the American railroad engineer celebrated in song for his heroic final ride.
How do you pronounce Casey?
Casey is pronounced KAY-see. Common variations include Kasey, Kacey, Cayce.
Is Casey a boy name?
Yes, Casey is traditionally a boy name. Popular nicknames include Case.