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Theresia

Girls' name

Form of Theresa

Theresia has been given to 2,016 babies in the U.S. since 1881. 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 1959, with 58 recorded.

Babies named Theresia, 2007

1 in 571,000

Theresia over time, 1880–2025

Girls
020406018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Theresia: meaning, origin, and history

Form of Theresa

Deeper origin not confirmed in the cited records

What Theresia means

Theresia is a form of Theresa.

Documented naming usage and pronunciation

Theresia is used in German and Dutch.

Another recorded pronunciation is /te.ˈʁeː.zi̯a/ and /tə.ˈreː.si.aː/ for Theresia.

Meaning behind the documented name family

The name developed through Theresia → Theresa. The family’s proposed meaning is “summer”, recorded in the naming reference for Theresa.

Origin, language, and formation

Theresia is used in German.

Related names and everyday forms

Related names include Theresa and Teresa.

Pronunciation and spelling

In German, Theresia is pronounced /teˈʁeː.zi̯a/.

American usage and historical context

In the United States, 2,016 girls were recorded with the name Theresia between 1881 and 2007. Its highest annual count was 58 in 1959; its best national rank was #527 in 1882.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Theresia?

Theresia had fewer than 5 recorded uses in 2025, so these figures use 2007, the last year it was published.

Among all babies, 2007
1 in 571,000
7 of 3,997,748 births
Among girls only
1 in 275,000
<0.01% of girls
Rank, 2007
Unranked
Fewer than 5 uses
Coin-flip room size
395,862 kids
Even odds of a second one

Where Theresia sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2007 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 395,862 children born in 2007 and it's an even bet that one of them is another Theresia. In a class of 30 the chance is Under 1%.

When Theresias were born

Half of everyone ever recorded as Theresia was born before 1949 — so the typical Theresia is around 76 today.

Median birth year
1949
About 76 years old
Biggest decade
1950s
18.6% of all use
Born in the last 25 years
5.5%
Mostly a past generation
Recorded since 1950
989
People you could plausibly meet
Choose a decade

1950s — 18.6% of all recorded uses (375).

Is Theresia 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 1959 (58)
Years since peak
66
Years
Year-to-year steadiness
Volatile
48.6% average annual change
Best rank ever
#527
1882

Spellings of Theresia

Theresia is not the most common spelling — Teresa is, with 47.5% against Theresia's 0.23%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Theresia is used

Across 1910–2025, Theresia was most concentrated in North Dakota — about 1 in 100,000 girls, against 1 in 794,827 across all states with data. It was least common in Texas (1 in —).

01 per 100,000

Most concentrated

  1. 1North Dakota1 in 100,000
  2. 2Alabama1 in —
  3. 3California1 in —
  4. 4Georgia1 in —
  5. 5Illinois1 in —
  6. 6Missouri1 in —
  7. 7Mississippi1 in —
  8. 8New York1 in —

Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Theresia has too little recent state data to map, so this covers all years from 1910.

Theresia around the world

Where Theresia ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    2011–2011
    #5,785
    in 2011
  • France
    1900–2025
    #4,343
    in 2025
  • South Australia
    1950–2012
    #871
    in 2012

Popularity data from Office for National Statistics, Institut national de la statistique et des études économiques and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. INSEE data under Licence Ouverte / Etalab 2.0. CBS SA data under CC BY 4.0.

Notable people named Theresia

People whose public names include Theresia, backed by Wikidata given-name records and ordered by linked Wikimedia pages. The name may be a middle name.

People data from Wikidata (CC0). Fame is measured, not judged — the order reflects how widely each person is documented, not the U.S. birth records popularity this page is otherwise about.

Theresia in other languages

Cross-language forms and variants of Theresia. Linked forms have their own page here.

TeresaTereseTerezaTheresTeresiaTheresaThereseTeresitaTêrêsaTeréziaThérèseTerezija

Variant forms from Wikidata (CC0). Most are used mainly outside the United States; U.S. birth records statistics cover US usage only.

Theresia by the numbers

The raw record for each sex the name is used for.

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#527
1882
Peak year
1959
58 that year
First recorded
1881
Last recorded
2007
All-time count
2,016
Count in 2025
Under 5

Names similar to Theresia

Matched on shared beginnings and endings, similar length, and comparable popularity.

TheodosiaTheadoraTheodoreTheadosiaTheressaAmbrosiaThersiaTheodoraBreasiaDanasiaTanasiaJanasiaMelissiaJalaysiaFantasiaNastassiaElisiaTheiaAnnastasiaTheolaTalaysiaCassiaTyasiaAlissia

Names with a curve like Theresia

Not spelling — timing. These names rose, peaked and faded in the same years as Theresia, so they read as being from the same moment even when they look nothing alike.

FredericaWilletteHelgaGlennDrusillaRayeTrudieArnitaVernettaArnettaCathrineJay

Sibling names for Theresia

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Theresia

Top names of 1959, Theresia's peak yearThe 1950s in fullOther names that peaked in 1882Girls' names starting with T