Sonny vs Arlo

Baby Name Comparison — 2026

Sonny

Boy #336 Most Popular 2 Syllables

"son, young boy"

Origin: English

American English Italian-American

✓ All Clear

Boy #146 Most Popular 2 Syllables

"fortified hill"

Origin: Old English

English American Australian

✓ All Clear

Sonny Rank #336

Arlo Rank #146

Arlo is more popular, ranked #146 vs #336 for Sonny.

Is Sonny or Arlo more popular?

Arlo is more popular, ranked #146 compared to Sonny at #336 in the United States.

What do Sonny and Arlo mean?

Sonny means "son, young boy" (English origin). Arlo means "fortified hill" (Old English origin).

Are Sonny and Arlo boy or girl names?

Sonny is primarily a boy name. Arlo is primarily a boy name.