Thaddaeus Boy
How popular is Thaddaeus?
#7,675 boy name in 2025
10 baby boys were named Thaddaeus in the US in 2025, making it the 7675th most popular boy name.
1,004living people named Thaddaeus (est.)
26median age of people named Thaddaeus
1,045babies named Thaddaeus since 1880
1 in 331,534US babies born in 2025
Thaddaeus popularity over time
| Rank in 2025 | #7,675 for boys (▼ 2020 from 2024) |
|---|---|
| Babies in 2025 | 10 boys |
| 10-year trend | Falling (-38% babies vs 2015) |
| Earlier ranks | #5,503 in 2015, #4,536 in 2020 |
| Peak year | 2005 (29 boys) |
| Highest rank | #2,205 in 1978 |
| First recorded | 1924 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Thaddaeus by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1920s | 6 | #3,865 |
| 1940s | 6 | #3,315 |
| 1960s | 7 | #3,594 |
| 1970s | 126 | #2,205 |
| 1980s | 176 | #2,225 |
| 1990s | 201 | #2,909 |
| 2000s | 225 | #3,138 |
| 2010s | 202 | #3,888 |
| 2020s | 96 | #4,490 |
Boy names about as popular as Thaddaeus
Questions
- Is Thaddaeus a boy or girl name?
- Thaddaeus is mostly a boy name. Over the last 10 years, 100% of babies named Thaddaeus were boys.
- How popular is the name Thaddaeus?
- 10 baby boys were named Thaddaeus in the US in 2025, making it the 7675th most popular boy name.
- When was Thaddaeus most popular?
- Thaddaeus peaked in 2005, when 29 boys were given the name. Its highest rank was #2,205 in 1978.
- How many people are named Thaddaeus?
- 1,045 babies have been named Thaddaeus in the US since 1880. We estimate about 1,004 of them are alive in 2026, with a median age of 26.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.