Kosei vs Kostas

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

Name A

Kosei

Boy name

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Name B

Kostas

Boy name

Full profile →

Which name is more popular?

Metric Kosei Kostas
Current Rank Unranked Unranked
Total Births (all years) 90 365
Peak Year 2008 1974
Peak Year Births 9 17
Peak Decade 2010ss 1970ss
Gender Boy Boy
First Recorded Year 2000 1961

Births by Decade

Decade Kosei Kostas
1960ss — 31
1970ss — 107
1980ss — 90
1990ss — 22
2000ss 40 45
2010ss 43 45
2020ss 7 25

Recent Annual Births (2014–present)

Year Kosei Kostas
2014 5 5
2015 — 5
2016 5 5
2018 6 —
2019 5 5
2020 7 8
2022 — 7
2023 — 10

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, 2000–2020.

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