Ustin vs Kacyn

Baby Name Comparison — 2026

Kacyn

Boy #6,406 Most Popular 2 Syllables

Meaning

"vigilant, watchful"

Origin: Irish (Casey root)

Cultural Roots

American English

Quick Stats

Popularity Rank
#6,406
Total SSA Count
14
Syllables
2
Formality
Moderate

Playground Safety Score

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Full profile for Kacyn →

Popularity Comparison

Ustin Rank #6,598
Kacyn Rank #6,406

Kacyn is more popular, ranked #6406 vs #6598 for Ustin.

Frequently Asked Questions

Is Ustin or Kacyn more popular?

Kacyn is more popular, ranked #6406 compared to Ustin at #6598 in the United States.

What do Ustin and Kacyn mean?

Ustin means "just, righteous" (Latin origin). Kacyn means "vigilant, watchful" (Irish (Casey root) origin).

Are Ustin and Kacyn boy or girl names?

Ustin is primarily a boy name. Kacyn is primarily a boy name.

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← Full profile: Ustin ← Full profile: Kacyn Browse all baby names