Thadeous
Boys' nameMeaning not yet documented
Thadeous has been given to 17 babies in the U.S. since 1979. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1986, with 6 recorded.
Babies named Thadeous, 1994
1 in 619,000
Thadeous over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Thadeous?
Thadeous had fewer than 5 recorded uses in 2025, so these figures use 1994, the last year it was published.
- Among all babies, 1994
- 1 in 619,000
- 6 of 3,715,972 births
- Among boys only
- 1 in 322,000
- <0.01% of boys
- Rank, 1994
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 429,287 kids
- Even odds of a second one
Where Thadeous sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 1994 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 429,287 children born in 1994 and it's an even bet that one of them is another Thadeous. In a class of 30 the chance is Under 1%.
When Thadeouss were born
Half of everyone ever recorded as Thadeous was born before 1986 — so the typical Thadeous is around 39 today.
- Biggest decade
- 1980s
- 35.3% of all use
- Born in the last 25 years
- 100.0%
- A modern name
- Recorded since 1950
- 17
- People you could plausibly meet
1980s — 35.3% of all recorded uses (6).
Is Thadeous rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- —
- Not ranked then
- Rank vs 5 years ago
- New entry
- Not ranked then
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 0%
- Peak was 1986 (6)
- Years since peak
- 39
- Years
- Year-to-year steadiness
- Not enough data
- Too few years
Spellings of Thadeous
Thadeous is not the most common spelling — Thaddeus is, with 92.1% against Thadeous's 0.06%.
Thadeous by the numbers
The raw record for each sex the name is used for.
Names similar to Thadeous
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Thadeous
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.