Colleen vs Si

Baby Name Comparison — 2026

Colleen

Girl #2,797 Most Popular 2 Syllables

Meaning

"girl, young woman"

Origin: Irish Gaelic

Cultural Roots

Irish Irish-American Scottish Australian

Quick Stats

Popularity Rank
#2,797
Total SSA Count
60
Syllables
2
Formality
Moderate
Nicknames
Collie, Cole, Coco

Playground Safety Score

15 High Risk

{:type=>:rhyme, :severity=>:medium, :message=>"'Colleen' rhymes with 'mean'"}

Full profile for Colleen →

Popularity Comparison

Colleen Rank #2,797
Si Rank #14,410

Colleen is more popular, ranked #2797 vs #14410 for Si.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Colleen ___

  • Colleen Marie
  • Colleen Ann
  • Colleen Patricia
  • Colleen Frances
  • Colleen Rose
  • Colleen Elizabeth

Si ___

No pairings available yet.

Sibling Name Ideas

Names that pair well as siblings.

If you choose Colleen

Bridget Siobhan Patrick Kieran Maureen

If you choose Si

No sibling data available yet.

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 Colleen or Si more popular?

Colleen is more popular, ranked #2797 compared to Si at #14410 in the United States.

What do Colleen and Si mean?

Colleen means "girl, young woman" (Irish Gaelic origin).

Are Colleen and Si boy or girl names?

Colleen is primarily a girl name. Si is primarily a girl name.

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← Full profile: Colleen ← Full profile: Si Browse all baby names