Olivia vs Rillia

Baby Name Comparison — 2026

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

Ava Ellie Adalynn Leilani

Full profile for Olivia →

Rillia

Girl #69,553 Most Popular

Quick Stats

Popularity Rank: #69,553
Total SSA Count: 5
Nicknames: Ril, Rill, Rilly

Playground Safety Score

✓ All Clear

Similar Names

Eliner Ednamay Susia Almar

Full profile for Rillia →

Popularity Comparison

Olivia Rank #1

Rillia Rank #69,553

Olivia is more popular, ranked #1 vs #69553 for Rillia.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Olivia ___

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

Rillia ___

No pairings available yet.

Sibling Name Ideas

Names that pair well as siblings.

If you choose Olivia

Liam Noah Charlotte Emma Sophia

If you choose Rillia

No sibling data available yet.

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Olivia or Rillia more popular?

Olivia is more popular, ranked #1 compared to Rillia at #69553 in the United States.

What do Olivia and Rillia mean?

Olivia means "olive tree" (Latin origin).

Are Olivia and Rillia boy or girl names?

Olivia is primarily a girl name. Rillia is primarily a girl name.

More Comparisons

Rillia vs Olivia Olivia vs Ava Olivia vs Ellie Olivia vs Adalynn Olivia vs Leilani

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