Kastor vs Kason

Side-by-side comparison of Kastor and Kason — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Kastor

Boy name

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Name B

Kason

Boy name · Rank #567

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Which name is more popular?

Metric Kastor Kason
Current Rank Unranked #567
Total Births (all years) 10 14,904
Peak Year 2017 2019
Peak Year Births 5 899
Peak Decade 2010ss 2010ss
Gender Boy Boy
First Recorded Year 2017 1974

Births by Decade

Decade Kastor Kason
1970ss — 41
1980ss — 202
1990ss — 481
2000ss — 2,456
2010ss 5 7,918
2020ss 5 3,806

Recent Annual Births (2014–present)

Year Kastor Kason
2014 — 869
2015 — 817
2016 — 879
2017 5 806
2018 — 794
2019 — 899
2020 — 851
2021 5 725
2022 — 645
2023 — 587
2024 — 518
2025 — 480

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 2017–2021.

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