Boy · #12,230 in 2026

Thaddius

Name: Popularity of the name Thaddius in U.S. births, 1880–2026
Creator: U.S. Social Security Administration
License: https://www.ssa.gov/foia/
Keywords: Thaddius, baby name, popularity, U.S., SSA, rankings

Current Rank

#12,230

Peak Rank

#3,205 (1989)

Total Babies

593

5-Yr Trend

Stable

1916

First Year

2023

Last Year

1989

Peak Year

#3205

Peak Rank

593

Total Count

Years Active

The Story of Thaddius

Thaddius first appeared in U.S. Social Security Administration records as a baby boy name in 1916, with 5 babies given the name that year. Its peak popularity came in 1989, when 18 Thaddiuss were born — ranking #3,205 that year. As of 2026, Thaddius ranks #12,230 for baby boys with 5 births, with steady use. In total, more than 593 Thaddiuss have been born in the U.S. since records began in 1880, spanning the 1910s through the 2020s.

Popularity Over Time

Popularity by State

Top 10

11-50

51-100

101-500

500+

No data

Names that sound like Thaddius

Phonetically similar names — useful when Thaddius is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.

Thaddeus
Thallus
Thallous
Thesis
Theseus
Thetis
Thymus
Thadeus
Thaddaeus
Thassos
Thatches
Thinness

Source: Datamuse . Phonetic similarity ranking, not curated.

Frequently Asked Questions about Thaddius

What does the name Thaddius mean?

Thaddius is a boy's name that has been used in U.S. records since 1916. Behind the Name doesn't list a specific etymology, but the name has remained in use across multiple decades.

How popular is Thaddius in 2026?

In 2026, Thaddius ranks #12,230 among boys' names in the U.S., with 5 babies given the name that year.

When was Thaddius most popular?

Thaddius reached its peak popularity in 1989, ranking #3,205 that year with 18 babies given the name.

Is Thaddius a unisex name?

In U.S. Social Security records, Thaddius is primarily a boy's name. We don't have meaningful data for it as a girl's name.

What names go well with Thaddius?

Names that share a similar style or popularity range with Thaddius include Yee, Steadman, Gerrell. These pairings are based on rank proximity and naming era in U.S. data.

About the name Thaddius

Thaddius is a boy baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1916 and has accumulated 593 births in the dataset. Thaddius's peak popularity came in 1989 when it ranked #3,205. Use the chart and map above to compare Thaddius's trajectory across years and U.S. states, or browse the related names section to discover similar choices.

Continue exploring

Data sources

Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
Predicted nationality distribution — Nationalize.io .
Phonetically similar names — Datamuse .

Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.