Seiichi vs Seiji

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

Name A

Seiichi

Boy name

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Name B

Seiji

Boy name · Rank #9068

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Which name is more popular?

Metric Seiichi Seiji
Current Rank Unranked #9068
Total Births (all years) 40 517
Peak Year 1919 2007
Peak Year Births 8 19
Peak Decade 1920ss 2000ss
Gender Boy Boy
First Recorded Year 1919 1914

Births by Decade

Decade Seiichi Seiji
1910ss 8 16
1920ss 32 74
1930ss — 22
1970ss — 28
1980ss — 31
1990ss — 75
2000ss — 116
2010ss — 106
2020ss — 49

Recent Annual Births (2014–present)

Year Seiichi Seiji
2014 — 12
2015 — 11
2016 — 7
2017 — 12
2018 — 6
2019 — 5
2020 — 10
2021 — 7
2022 — 7
2023 — 9
2024 — 8
2025 — 8

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, 1919–1926.

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