How Many People Are Named Theadora?
An estimated 1,105 people in the United States have the first name Theadora. It is almost exclusively a female name. The average bearer is 19 years old, and Theadora peaked in popularity in 2024 with 106 births that year.
Below you will find a full statistical profile of Theadora as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Theadora paired with any surname.
Estimated Living Americans
1,105
About 1 in 310,185 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
19
years old
Peak Year
2024
106 births
Total Registered
1,421
since 1880
Gender Distribution for Theadora
Theadora is almost exclusively a female name. Out of 1,421 total births registered, 100.0% were female.
Theadora as a female name
Ranked #1,889 in 2024
106 female births in 2024
Peak: 2024 (106 births)
Theadora: Popularity Over Time
SSA records for Theadora span from the 1900s to the 2020s, covering 13 decades of naming data. The most popular decade for this name was the 2020s, when 427 babies were registered. Theadora remains highly popular today, with recent registration numbers near its historical peak.
Theadora by Decade
How has Theadora tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Theadora by State
Birth registrations for Theadora span all 12 states and territories in the SSA database. The highest counts are in New York, California, Michigan. The lowest are in Tennessee, North Carolina, Virginia. On average, about 16 Theadoras were registered per state.
Theadora + Last Name Combinations
How many people share a full name with Theadora as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Theadora
Other first names starting with T with a similar number of bearers.
Theadora: Questions and Answers
How many people in the U.S. are named Theadora?
We estimate approximately 1,105 people named Theadora are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 310,185 Americans share this first name.
Is Theadora a common name?
Theadora is classified as "Rare" and is more popular than 90.7% of all first names in the SSA database. A total of 1,421 births have been registered with this name since 1880.
When was Theadora most popular?
Theadora reached peak popularity in 2024, when 106 babies were given this name. The average age of a living person named Theadora is approximately 19 years old, reflecting when the name was most commonly given.
Is Theadora a female name?
Theadora is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Theadora Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Theadora Smith, Theadora Johnson, Theadora Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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