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Casey vs Cillian

Baby Name Comparison — 2026

Popularity Comparison

Casey Rank #310
Cillian Rank #464

Casey is more popular, ranked #310 vs #464 for Cillian.

Frequently Asked Questions

Is Casey or Cillian more popular?

Casey is more popular, ranked #310 compared to Cillian at #464 in the United States.

What do Casey and Cillian mean?

Cillian means "strife, war" (Old Irish origin).

Are Casey and Cillian boy or girl names?

Casey is primarily a boy name. Cillian is primarily a boy name.

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← Full profile: Casey ← Full profile: Cillian Browse all baby names