Riley vs Arlo

Baby Name Comparison — 2026

Riley

Boy #229 Most Popular 2 Syllables

"courageous, valiant"

Origin: Irish

Irish English American

✓ All Clear

Boy #146 Most Popular 2 Syllables

"fortified hill"

Origin: Old English

English American Australian

✓ All Clear

Riley Rank #229

Arlo Rank #146

Arlo is more popular, ranked #146 vs #229 for Riley.

Is Riley or Arlo more popular?

Arlo is more popular, ranked #146 compared to Riley at #229 in the United States.

What do Riley and Arlo mean?

Riley means "courageous, valiant" (Irish origin). Arlo means "fortified hill" (Old English origin).

Are Riley and Arlo boy or girl names?

Riley is primarily a boy name. Arlo is primarily a boy name.