Foster vs Billy

Baby Name Comparison — 2026

Foster

Boy #1,077 Most Popular 2 Syllables

"forest keeper, forester"

Origin: Old English

English American

✓ All Clear

Boy #1,051 Most Popular 2 Syllables

"resolute protector"

Origin: Old German via Norman French

English American Australian Irish

✓ All Clear

Foster Rank #1,077

Billy Rank #1,051

Billy is more popular, ranked #1051 vs #1077 for Foster.

Is Foster or Billy more popular?

Billy is more popular, ranked #1051 compared to Foster at #1077 in the United States.

What do Foster and Billy mean?

Foster means "forest keeper, forester" (Old English origin). Billy means "resolute protector" (Old German via Norman French origin).

Are Foster and Billy boy or girl names?

Foster is primarily a boy name. Billy is primarily a boy name.