Casandra vs Onslow

Baby Name Comparison — 2026

Onslow

Boy #15,100 Most Popular 2 Syllables

Meaning

"Ōn's hill; from the hill of Ōn"

Origin: Old English

Cultural Roots

English British

Quick Stats

Popularity Rank
#15,100
Total SSA Count
7
Syllables
2
Formality
Formal
Nicknames
Ons

Playground Safety Score

✓ All Clear
Full profile for Onslow →

Popularity Comparison

Casandra Rank #9,410
Onslow Rank #15,100

Casandra is more popular, ranked #9410 vs #15100 for Onslow.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Casandra ___

No pairings available yet.

Onslow ___

  • Onslow Frederick
  • Onslow George
  • Onslow James
  • Onslow Henry
  • Onslow Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Casandra

No sibling data available yet.

If you choose Onslow

Algernon Hortense Phineas Cordelia Rupert

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 Casandra or Onslow more popular?

Casandra is more popular, ranked #9410 compared to Onslow at #15100 in the United States.

What do Casandra and Onslow mean?

Onslow means "Ōn's hill; from the hill of Ōn" (Old English origin).

Are Casandra and Onslow boy or girl names?

Casandra is primarily a girl name. Onslow is primarily a boy name.

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← Full profile: Casandra ← Full profile: Onslow Browse all baby names