Seiya vs Seiji
Side-by-side comparison of Seiya and Seiji - popularity rank, total births, peak decade, and historical trends from Social Security Administration data.
Which name is more popular?
| Metric | Seiya | Seiji |
| Current Rank | #8631 | #9068 |
| Total Births (all years) | 112 | 517 |
| Peak Year | 2005 | 2007 |
| Peak Year Births | 10 | 19 |
| Peak Decade | 2000s | 2000s |
| Gender | Boy | Boy |
| First Recorded Year | 1996 | 1914 |
Births by Decade
| Decade | Seiya | Seiji |
| 1910s | - | 16 |
| 1920s | - | 74 |
| 1930s | - | 22 |
| 1970s | - | 28 |
| 1980s | - | 31 |
| 1990s | 12 | 75 |
| 2000s | 37 | 116 |
| 2010s | 30 | 106 |
| 2020s | 33 | 49 |
Recent Annual Births (2014–present)
| Year | Seiya | Seiji |
| 2014 | 5 | 12 |
| 2015 | 7 | 11 |
| 2016 | - | 7 |
| 2017 | - | 12 |
| 2018 | - | 6 |
| 2019 | 5 | 5 |
| 2020 | 6 | 10 |
| 2021 | 8 | 7 |
| 2022 | - | 7 |
| 2023 | - | 9 |
| 2024 | 9 | 8 |
| 2025 | 10 | 8 |