Kastor
Kastor is a name with a single cultural origin: Greek Mythology.
- Greek Mythology
Meaning & Origin of Kastor
What this name means, where it came from, and how it has traveled across cultures.
Kastor is a name with a single cultural origin: Greek Mythology.
Origin data from Behind the Name .
Cultural Origins (via Behind the Name)
- Greek Mythology
The Story of Kastor
American parents first put Kastor on the record books as a baby boy name in 2017, with 5 registered babies. Its peak popularity came in 2017, when 5 Kastors were born — ranking #12,243 that year. The 2010s were its strongest decade, accounting for roughly 50% of all recorded Kastors. Its most recent appearance in the national data came in 2021 (5 births); the name has since faded from the published rankings. In total, more than 10 Kastors have been born in the U.S. since records began in 1880, spanning the 2010s through the 2020s.
Popularity Over Time
Popularity by State
Variants & Related Forms of Kastor
Foreign forms, alternate spellings, and nicknames that share roots with Kastor. Linked entries have a profile on Peek a Name.
Names that sound like Kastor
Phonetically similar names — useful when Kastor is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.
Source: Datamuse . Phonetic similarity ranking, not curated.
Frequently Asked Questions about Kastor
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How popular is Kastor in 2026?
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About the name Kastor
Kastor is a boy baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 2017 and has accumulated 10 births in the dataset. Kastor's peak popularity came in 2017 when it ranked #12,243. Use the chart and map above to compare Kastor's trajectory across years and U.S. states, or browse the related names section to discover similar choices.
Continue exploring
- Top names of 2017 →
- Names of the 2010s →
- Names starting with "K" →
- Browse all boy names →
- Top names of 2026 →
Data sources
- Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
- Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
- Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
- Predicted nationality distribution — Nationalize.io .
- Phonetically similar names — Datamuse .
Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.