Compare two names
Seith and Seth side by side: Seith peaked in 1999 and Seth in 2000; in 2025 they were given to 0 and 505 babies.
Seith and Seth, year by year
Girls and boys together; Seith solid, Seth dashed.
| Seith | Seth | |
|---|---|---|
| Births 2025 | 0 | 505 |
| Rank 2025 | not ranked | #581 among boys’ names |
| Recorded since 1880 | 125 | 166,288 |
| Peak year | 1999 | 2000 |
| Girls | 0% | 0.3% |
| Alive, estimated | 120 | 156,000 |
| Median age | 31 | 29 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.