Castor
boy name#4707 in 2025Castor entered the US charts in 1998, peaked at #3681 in 2016, ranks #4707 today — a rare gem few children share.
Popularity 1998–2025
#4707
rank today
#3681
peak (2016)
21
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 1990s | #6303 |
| 2000s | #7840 |
| 2010s | #5519 |
| 2020s | #5483 |
Strongest states
Over the last decade, Castor has been most popular in CA, TX.
Living bearers
About 400 people named Castor are estimated to be alive in the US today.
The typical Castor is a kid of about 9 — this name's wave is very recent.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Castor in 2025?
- Castor ranks #4707 among US boy names in 2025, with 21 babies given the name.
- When was the name Castor most popular?
- Castor peaked in 2016, reaching #3681 among US boy names.
- Will my child share the name Castor with classmates?
- Castor will almost certainly be the only one in school.
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