Kastor
boy nameKastor entered the US charts in 2017, peaked at #12146 in 2021, is rarely given today — a rare gem few children share.
Popularity 2017–2025
—
rank today
#12146
peak (2021)
0
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 2010s | #12246 |
| 2020s | #12146 |
Living bearers
Fewer than a hundred people named Kastor are estimated to be alive in the US today — a true one-of-a-kind name.
The typical Kastor is a kid of about 8 — 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 Kastor in 2025?
- Kastor is rarely given in the US today — it does not rank in the top 2000 boy names.
- When was the name Kastor most popular?
- Kastor peaked in 2021, reaching #12146 among US boy names.
- Will my child share the name Kastor with classmates?
- Kastor will almost certainly be the only one in school.
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