Compare two names
Thaddaeus and Thaddeus side by side: Thaddaeus peaked in 2005 and Thaddeus in 2016; in 2025 they were given to 10 and 314 babies.
Thaddaeus and Thaddeus, year by year
Girls and boys together; Thaddaeus solid, Thaddeus dashed.
| Thaddaeus | Thaddeus | |
|---|---|---|
| Births 2025 | 10 | 314 |
| Rank 2025 | #8,181 among boys’ names | #798 among boys’ names |
| Recorded since 1880 | 1,045 | 26,089 |
| Peak year | 2005 | 2016 |
| Girls | 0% | 0.1% |
| Alive, estimated | 999 | 17,900 |
| Median age | 26 | 36 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.