boy's name

Thaddius

THAD-ee-us (English)

  • Gender Boy
  • Syllables 3
  • Letters 8
  • Births on record 593

Thaddius is a boy's name with 3 syllables. In 2023 it was given to 5 babies in the United States. It was given to fewer than five babies in the most recent year of published figures for the United States.

  • Peaked in 1989, when 18 babies were given the name.
  • It has been falling over the past decade.
  • First appears in US birth records in 1916.
  • 3 syllables, with the stress on syllable 1.

Thaddius Over Time

Births per decade in the United States, 1910s to 2020s. The striped bar is the 2020s, which so far covers 2020 to 2025.

116
'10 '20 '30 '40 '50 '60 '70 '80 '90 '00 '10 '20
Show the numbers
Births named Thaddius by decade in the United States
Decade Births
1910s 12
1920s 5
1930s 5
1940s 12
1950s 23
1960s 35
1970s 112
1980s 116
1990s 105
2000s 92
2010s 58
2020s (to 2025) 18

How Popular Is Thaddius?

In 2023, Thaddius was given to 5 babies in the United States. It was given to fewer than five babies in the most recent year of published figures for the United States.

US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.

Names That Peaked Alongside Thaddius

These names rose and fell in the same era, which is why they tend to sound like they belong together.

Parents Who Like Thaddius Also Like

Names whose popularity has risen and fallen in step with Thaddius over the last century — the same taste, a different name.

How to Say Thaddius

  • English THAD-ee-us

Sibling Names for Thaddius

Names from the same era that do not rhyme or share an initial with Thaddius — the two things that make a sibling set grate.

Common Questions About Thaddius

How popular is the name Thaddius?

In 2023, Thaddius was given to 5 babies in the United States. It was given to fewer than five babies in the most recent year of published figures for the United States.

Is Thaddius a girl's or a boy's name?

Thaddius is given almost entirely to boys in birth records.

How many syllables are in Thaddius?

Thaddius has 3 syllables.

When was Thaddius most popular?

Thaddius peaked in 1989, when 18 babies were given the name. It has been falling over the past decade.