Millie vs Olivia

Baby Name Comparison — 2026

Millie

Girl #86 Most Popular 2 Syllables

Meaning

"strength, work"

Origin: Old Germanic (diminutive of Millicent)

Cultural Roots

English American Australian

Quick Stats

Popularity Rank
#86
Total SSA Count
2,910
Syllables
2
Formality
Casual
Nicknames
Mills

Playground Safety Score

✓ All Clear
Full profile for Millie →

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

✓ All Clear
Full profile for Olivia →

Popularity Comparison

Millie Rank #86
Olivia Rank #1

Olivia is more popular, ranked #1 vs #86 for Millie.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Millie ___

  • Millie Rose
  • Millie Grace
  • Millie Jane
  • Millie Mae
  • Millie Faye
  • Millie Bea

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 Millie

Daisy Dolly Maggie Freddie Archie

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 Millie or Olivia more popular?

Olivia is more popular, ranked #1 compared to Millie at #86 in the United States.

What do Millie and Olivia mean?

Millie means "strength, work" (Old Germanic (diminutive of Millicent) origin). Olivia means "olive tree" (Latin origin).

Are Millie and Olivia boy or girl names?

Millie is primarily a girl name. Olivia is primarily a girl name.

More Comparisons

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