Fergus vs Castle

Baby Name Comparison — 2026

Popularity Comparison

Fergus Rank #4,453
Castle Rank #4,304

Castle is more popular, ranked #4304 vs #4453 for Fergus.

Frequently Asked Questions

Is Fergus or Castle more popular?

Castle is more popular, ranked #4304 compared to Fergus at #4453 in the United States.

What do Fergus and Castle mean?

Fergus means "man of vigor" (Old Irish origin). Castle means "fortified stronghold" (Latin/Norman French origin).

Are Fergus and Castle boy or girl names?

Fergus is primarily a boy name. Castle is primarily a boy name.

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