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 1920s 2000s
Gender Boy Boy
First Recorded Year 1919 1914

Births by Decade

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