Mack vs Jeffrey

Baby Name Comparison — 2026

Mack

Boy #499 Most Popular 1 Syllable

"son of"

Origin: Scottish Gaelic

Scottish Irish American

✓ All Clear

Boy #521 Most Popular 3 Syllables

"pledge of peace"

Origin: Germanic

English American French

✓ All Clear

Mack Rank #499

Jeffrey Rank #521

Mack is more popular, ranked #499 vs #521 for Jeffrey.

Is Mack or Jeffrey more popular?

Mack is more popular, ranked #499 compared to Jeffrey at #521 in the United States.

What do Mack and Jeffrey mean?

Mack means "son of" (Scottish Gaelic origin). Jeffrey means "pledge of peace" (Germanic origin).

Are Mack and Jeffrey boy or girl names?

Mack is primarily a boy name. Jeffrey is primarily a boy name.