Castor vs Liam

Baby Name Comparison — 2026

Liam

Boy #1 Most Popular 2 Syllables

Meaning

"strong-willed warrior"

Origin: Irish

Cultural Roots

Irish English American

Quick Stats

Popularity Rank
#1
Total SSA Count
22,164
Syllables
2
Formality
Moderate
Nicknames
Lee

Playground Safety Score

✓ All Clear
Full profile for Liam →

Popularity Comparison

Castor Rank #7,391
Liam Rank #1

Liam is more popular, ranked #1 vs #7391 for Castor.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Castor ___

No pairings available yet.

Liam ___

  • Liam James
  • Liam Alexander
  • Liam Thomas
  • Liam Michael
  • Liam Patrick
  • Liam Joseph

Sibling Name Ideas

Names that pair well as siblings.

If you choose Castor

No sibling data available yet.

If you choose Liam

Olivia Emma Noah Charlotte Sophia

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Castor or Liam more popular?

Liam is more popular, ranked #1 compared to Castor at #7391 in the United States.

What do Castor and Liam mean?

Liam means "strong-willed warrior" (Irish origin).

Are Castor and Liam boy or girl names?

Castor is primarily a boy name. Liam is primarily a boy name.

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← Full profile: Castor ← Full profile: Liam Browse all baby names