Girl · #6,539 in 2026

Theria

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

Theria is a subclass of mammals amongst the Theriiformes. Theria contains the eutherians and the metatherians but excludes the egg-laying monotremes and various extinct mammals evolving prior to the common ancestor of placentals and marsupials.

Current Rank

#6,539

Peak Rank

#3,701 (1936)

Total Babies

5-Yr Trend

Stable

1919

First Year

1965

Last Year

1936

Peak Year

#3701

Peak Rank

Total Count

Years Active

Meaning & Origin of Theria

What this name means, where it came from, and how it has traveled across cultures.

Source: Wikipedia (CC BY-SA 3.0). Read more →

The Story of Theria

Theria first appeared in U.S. Social Security Administration records as a baby girl name in 1919, with 5 babies given the name that year. Its peak popularity came in 1936, when 6 Therias were born — ranking #3,701 that year. As of 2026, Theria ranks #6,539 for baby girls with 5 births, with steady use. In total, more than 22 Therias 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 Theria

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

Thoria
Theriault
Theory
Theories
Thiry
Thierry
Thiery
Therien
Therian
Thira
Therial
Etheria

Source: Datamuse . Phonetic similarity ranking, not curated.

Frequently Asked Questions about Theria

What does the name Theria mean?

How popular is Theria in 2026?

In 2026, Theria ranks #6,539 among girls' names in the U.S., with 5 babies given the name that year.

When was Theria most popular?

Theria reached its peak popularity in 1936, ranking #3,701 that year with 6 babies given the name.

Is Theria a unisex name?

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

What names go well with Theria?

Names that share a similar style or popularity range with Theria include Zoella, Eliane, Normie. These pairings are based on rank proximity and naming era in U.S. data.

About the name Theria

Theria is a girl baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1919 and has accumulated 22 births in the dataset. Theria's peak popularity came in 1936 when it ranked #3,701. Use the chart and map above to compare Theria'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.