Kacey vs Kailey

Baby Name Comparison — 2026

Kacey

Boy #1,045 Most Popular 2 Syllables

Meaning

"brave in battle, vigilant"

Origin: Irish Gaelic

Cultural Roots

Irish American

Quick Stats

Popularity Rank
#1,045
Total SSA Count
211
Syllables
2
Formality
Casual
Nicknames
Kace, KC

Playground Safety Score

✓ All Clear
Full profile for Kacey →

Popularity Comparison

Kacey Rank #1,045
Kailey Rank #1,284

Kacey is more popular, ranked #1045 vs #1284 for Kailey.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kacey ___

  • Kacey James
  • Kacey Lee
  • Kacey Allen
  • Kacey Thomas
  • Kacey Ryan
  • Kacey Scott

Kailey ___

  • Kailey Ann
  • Kailey Grace
  • Kailey Marie
  • Kailey Rose
  • Kailey Elizabeth
  • Kailey Nicole

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kacey

Jordan Riley Logan Skyler Morgan

If you choose Kailey

Hailey Bailey Kylie Rylee Brielle

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 Kacey or Kailey more popular?

Kacey is more popular, ranked #1045 compared to Kailey at #1284 in the United States.

What do Kacey and Kailey mean?

Kacey means "brave in battle, vigilant" (Irish Gaelic origin). Kailey means "slender, graceful" (Irish Gaelic origin).

Are Kacey and Kailey boy or girl names?

Kacey is primarily a boy name. Kailey is primarily a girl name.

More Comparisons

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← Full profile: Kacey ← Full profile: Kailey Browse all baby names