Kayce vs Sullivan

Baby Name Comparison — 2026

Kayce

Boy #420 Most Popular 2 Syllables

"alert, watchful, vigilant"

Origin: Irish Gaelic

American Irish

✓ All Clear

Boy #340 Most Popular 3 Syllables

"descendant of the dark one"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Kayce Rank #420

Sullivan Rank #340

Sullivan is more popular, ranked #340 vs #420 for Kayce.

Is Kayce or Sullivan more popular?

Sullivan is more popular, ranked #340 compared to Kayce at #420 in the United States.

What do Kayce and Sullivan mean?

Kayce means "alert, watchful, vigilant" (Irish Gaelic origin). Sullivan means "descendant of the dark one" (Irish Gaelic origin).

Are Kayce and Sullivan boy or girl names?

Kayce is primarily a boy name. Sullivan is primarily a boy name.