Castro vs Oliver

Baby Name Comparison — 2026

Castro

Boy #17,549 Most Popular 2 Syllables

Meaning

"castle, fortress"

Origin: Latin

Cultural Roots

Spanish Portuguese Latin American

Quick Stats

Popularity Rank: #17,549
Total SSA Count: 6
Syllables: 2
Formality: Moderate
Nicknames: Cas, Caz

Playground Safety Score

✓ All Clear

Similar Names

Celina Ensley Demetricus Madaleno

Full profile for Castro →

Oliver

Boy #3 Most Popular 3 Syllables

Meaning

"olive tree"

Origin: Latin

Cultural Roots

English French Scandinavian

Quick Stats

Popularity Rank: #3
Total SSA Count: 15,343
Syllables: 3
Formality: Moderate
Nicknames: Ollie, Oli

Playground Safety Score

✓ All Clear

Similar Names

Brayden Joseph Waylon Emmett

Full profile for Oliver →

Popularity Comparison

Castro Rank #17,549

Oliver Rank #3

Oliver is more popular, ranked #3 vs #17549 for Castro.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Castro ___

Castro Luis
Castro Miguel
Castro Antonio
Castro Rafael
Castro Emilio

Oliver ___

Oliver James
Oliver Thomas
Oliver William
Oliver Henry
Oliver John
Oliver Benjamin

Sibling Name Ideas

Names that pair well as siblings.

If you choose Castro

Diego Mateo Isabella Valentina

If you choose Oliver

Olivia Charlotte Emma Sophia Amelia

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Castro or Oliver more popular?

Oliver is more popular, ranked #3 compared to Castro at #17549 in the United States.

What do Castro and Oliver mean?

Castro means "castle, fortress" (Latin origin). Oliver means "olive tree" (Latin origin).

Are Castro and Oliver boy or girl names?

Castro is primarily a boy name. Oliver is primarily a boy name.

More Comparisons

Oliver vs Castro Castro vs Celina Castro vs Ensley Castro vs Demetricus Castro vs Madaleno

← Full profile: Castro ← Full profile: Oliver Browse all baby names