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