Declan vs Simon

Baby Name Comparison — 2026

Declan

Boy #131 Most Popular 2 Syllables

"man of prayer"

Origin: Irish Gaelic

Irish English American

✓ All Clear

Boy #251 Most Popular 2 Syllables

"he has heard, God has heard"

Origin: Hebrew

English French German Scandinavian Jewish

✓ All Clear

Declan Rank #131

Simon Rank #251

Declan is more popular, ranked #131 vs #251 for Simon.

Is Declan or Simon more popular?

Declan is more popular, ranked #131 compared to Simon at #251 in the United States.

What do Declan and Simon mean?

Declan means "man of prayer" (Irish Gaelic origin). Simon means "he has heard, God has heard" (Hebrew origin).

Are Declan and Simon boy or girl names?

Declan is primarily a boy name. Simon is primarily a boy name.