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Home › Baby Names Directory › Castle

Castle

♂ Boy

Pronounced KASS-əl /ˈkæs.əl/High

Meaning: From the word castle — Latin castellum, 'fortress, stronghold' — a word and surname nameMedium

In 30 seconds: Strong as a fortress: Castle is the word for a stronghold — bold, sturdy, and distinctive (a surname too). A name built to last.
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Origin MediumLatin, English
MeaningFrom the word castle — Latin castellum, 'fortress, stronghold' — a word and surname name
U.S. rank (2025)#5430 ↘ Falling
2025 U.S. births17 boys (0.00% of U.S. boys)
Peak year2018
Total births (all-time)≈ 384

Popularity in the U.S. · SSA data

peak 201819162025

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Castle comes from the word castle — Latin castellum, 'fortress, stronghold' — used as a bold word-and-surname name. It evokes strength, protection, and grandeur.

It registers thinly in records. Rare, fortress at the root, and sturdy.

Did you know? Castle, from Latin castellum, 'fortress', is both a word-name and a surname — strong and protective, with a touch of medieval grandeur.
Overall data confidence 75%
Oxford English Dictionary — castle — word origin

Variations

CastellCassel

Nicknames

Cass

Famous Bearers

  • ★Nick Castle (1947-)
    American film director and actor, played Michael Myers in the original Halloween (1978)

If you like Castle…

Castiel— a fellow Cas- name
Cassius— a companion strong name
Steele— another sturdy word-name
Fox— a fellow bold word-name

Explore names like Castle

By themeenglishlatinword-namesurname-name
By meaningStrength

All themes →All meanings →All origins →

Frequently Asked

What does the name Castle mean?

Castle is the word for a fortress or stronghold, from Latin castellum.

How do you pronounce Castle?

It's said KASS-əl /ˈkæs.əl/ — two syllables, stress on the first.

Is Castle a boy or girl name?

Castle is a boy's name.

How popular is Castle?

Castle is a rare name in the U.S.

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