Compare two names
Thadeus and Thaddeus side by side: Thadeus peaked in 1918 and Thaddeus in 2016; in 2025 they were given to 6 and 314 babies.
Thadeus and Thaddeus, year by year
Girls and boys together; Thadeus solid, Thaddeus dashed.
| Thadeus | Thaddeus | |
|---|---|---|
| Births 2025 | 6 | 314 |
| Rank 2025 | #11,841 among boys’ names | #798 among boys’ names |
| Recorded since 1880 | 1,123 | 26,089 |
| Peak year | 1918 | 2016 |
| Girls | 0% | 0.1% |
| Alive, estimated | 763 | 17,900 |
| Median age | 33 | 36 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.