Castor
- Pronunciation
- [Cas-tor]
- Gender
- Male
- Meaning
- Myth Name (Brother Of Helen)
- Origin
- Greek
Castor Popularity Snapshot
Across the entire US Social Security Administration record (1880–2024), 366 baby boys have been named Castor. The name peaked in 2016 with 29 US births that year (rank #3702). In 2024, ranked #6887 nationally — 3,185 places below its 2016 peak.
Top States for Castor
Based on 1910–2024 US SSA state-level records, the three states with the most Castor births are: Texas (5).
Other Greek-Origin Names Like Castor
If you like Castor's Greek origin, consider these related names: Abdera, Abderus, Absyrtus, Abydos, Acantha. Browse all Greek names →
6-Letter Names Starting with C
Names with Castor's exact length and starting letter: Cadell, Cadena, Cadhla, Cadman, Cadmon.
Quick Facts About Castor
Variant Forms
| Name | Meaning | Gender | Origin |
|---|---|---|---|
| Caster | From The Roman Camp | Male | English |
Looking for names like Castor?
A dedicated page with 60+ related names — spelling variants, rhymes, alliterations, same-origin matches, and shared meaning concepts — lives at its own URL so each kind of similarity gets a deeper treatment than fits here.
Compare Castor to Other Popular Names
Side-by-side popularity charts and crossover years for Castor against today's most popular boys-name peers (top 8 by US births in the last 10 years of SSA records).