Compare two names
Tadao and Tadeo side by side: Tadao peaked in 1920 and Tadeo in 2024; in 2025 they were given to 0 and 753 babies.
Tadao and Tadeo, year by year
Girls and boys together; Tadao solid, Tadeo dashed.
| Tadao | Tadeo | |
|---|---|---|
| Births 2025 | 0 | 753 |
| Rank 2025 | not ranked | #427 among boys’ names |
| Recorded since 1880 | 295 | 5,843 |
| Peak year | 1920 | 2024 |
| Girls | 0% | 0% |
| Alive, estimated | under 100 | 5,800 |
| Median age | n/a | 5 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.