Cosie vs Olivia

Baby Name Comparison — 2026

Cosie

Girl #48,554 Most Popular

Quick Stats

Popularity Rank: #48,554
Total SSA Count: 5
Nicknames: Cos, Coy, Coie

Playground Safety Score

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Similar Names

Fleurette Roser Viora Imal

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Olivia

Girl #1 Most Popular 4 Syllables

Meaning

"olive tree"

Origin: Latin

Cultural Roots

English Italian American

Quick Stats

Popularity Rank: #1
Total SSA Count: 14,718
Syllables: 4
Formality: Moderate
Nicknames: Liv, Livvy, Oli

Playground Safety Score

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Similar Names

Eliana Genevieve Sloane Madelyn

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Popularity Comparison

Cosie Rank #48,554

Olivia Rank #1

Olivia is more popular, ranked #1 vs #48554 for Cosie.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cosie ___

No pairings available yet.

Olivia ___

Olivia Rose
Olivia Grace
Olivia Jane
Olivia Mae
Olivia Claire
Olivia Jade

Sibling Name Ideas

Names that pair well as siblings.

If you choose Cosie

No sibling data available yet.

If you choose Olivia

Liam Noah Charlotte Emma Sophia

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 Cosie or Olivia more popular?

Olivia is more popular, ranked #1 compared to Cosie at #48554 in the United States.

What do Cosie and Olivia mean?

Olivia means "olive tree" (Latin origin).

Are Cosie and Olivia boy or girl names?

Cosie is primarily a girl name. Olivia is primarily a girl name.

More Comparisons

Olivia vs Cosie Cosie vs Fleurette Cosie vs Roser Cosie vs Viora Cosie vs Imal

← Full profile: Cosie ← Full profile: Olivia Browse all baby names