Declan vs Olivia

Baby Name Comparison — 2026

Popularity Comparison

Declan Rank #131
Olivia Rank #1

Olivia is more popular, ranked #1 vs #131 for Declan.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Declan ___

  • Declan James
  • Declan Patrick
  • Declan Michael
  • Declan Ryan
  • Declan Thomas
  • Declan Cole

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 Declan

Finn Liam Siobhan Aoife Rowan

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 Declan or Olivia more popular?

Olivia is more popular, ranked #1 compared to Declan at #131 in the United States.

What do Declan and Olivia mean?

Declan means "man of prayer" (Irish Gaelic origin). Olivia means "olive tree" (Latin origin).

Are Declan and Olivia boy or girl names?

Declan is primarily a boy name. Olivia is primarily a girl name.

More Comparisons

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