How Many People Are Named Thaddius?
people named Thaddius are alive in the United States today (estimate)
About 1 in 644,877 people in the US has this name
Based on 593 babies named Thaddius in Social Security records from 1916 to 2023, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
18 births
Trend
Stable (last 10 years)
⚧ Gender Distribution
All of the babies given the name Thaddius in the records were boys.
👥 Age Distribution
The average person named Thaddius alive today is about 35 years old, and 58% are between 30 and 59. Half of them were between 22 and 48 in 2025.
📈 Popularity Over Time
Thaddius first appears in the records in 1916 and was given most often in 1989, to 18 babies. The last year it was given to at least 5 babies of one sex was 2023.
Babies given the name each year, 1916 to 2023
🏆 Rank History
Thaddius has never been one of the 100 most popular boys' names. Its best rank was #2,316, in 1972.
| Boys | |
|---|---|
| Rank in 2025 | Not ranked |
| Best rank | #2,316 (1972) |
| Years in the top 100 | None |
| Rank in its biggest decade | #3,744 in the 1980s |
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